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342540 = 2232511173
BaseRepresentation
bin1010011101000001100
3122101212200
41103220030
541430130
611201500
72624442
oct1235014
9571780
10342540
112143a0
12146290
13bcbb3
148cb92
156b760
hex53a0c

342540 has 72 divisors (see below), whose sum is σ = 1140048. Its totient is φ = 82560.

The previous prime is 342527. The next prime is 342547. The reversal of 342540 is 45243.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 342540.

It is not an unprimeable number, because it can be changed into a prime (342547) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1894 + ... + 2066.

It is an arithmetic number, because the mean of its divisors is an integer number (15834).

2342540 is an apocalyptic number.

342540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 342540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (570024).

342540 is an abundant number, since it is smaller than the sum of its proper divisors (797508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

342540 is a wasteful number, since it uses less digits than its factorization.

342540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 342540 is about 585.2691688446. The cubic root of 342540 is about 69.9686934837.

Adding to 342540 its reverse (45243), we get a palindrome (387783).

The spelling of 342540 in words is "three hundred forty-two thousand, five hundred forty".

Divisors: 1 2 3 4 5 6 9 10 11 12 15 18 20 22 30 33 36 44 45 55 60 66 90 99 110 132 165 173 180 198 220 330 346 396 495 519 660 692 865 990 1038 1557 1730 1903 1980 2076 2595 3114 3460 3806 5190 5709 6228 7612 7785 9515 10380 11418 15570 17127 19030 22836 28545 31140 34254 38060 57090 68508 85635 114180 171270 342540