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242040 = 23352017
BaseRepresentation
bin111011000101111000
3110022000110
4323011320
530221130
65104320
72025441
oct730570
9408013
10242040
11155937
12b80a0
1386226
14642c8
154bab0
hex3b178

242040 has 32 divisors (see below), whose sum is σ = 726480. Its totient is φ = 64512.

The previous prime is 242009. The next prime is 242057. The reversal of 242040 is 40242.

242040 = T215 + T216 + ... + T224.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

242040 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 889 + ... + 1128.

2242040 is an apocalyptic number.

242040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242040 is an abundant number, since it is smaller than the sum of its proper divisors (484440).

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

242040 is a wasteful number, since it uses less digits than its factorization.

242040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031 (or 2027 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 242040 is about 491.9756091515. The cubic root of 242040 is about 62.3202300869.

Adding to 242040 its reverse (40242), we get a palindrome (282282).

The spelling of 242040 in words is "two hundred forty-two thousand, forty", and thus it is an iban number.

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 2017 4034 6051 8068 10085 12102 16136 20170 24204 30255 40340 48408 60510 80680 121020 242040