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143240 = 2353581
BaseRepresentation
bin100010111110001000
321021111012
4202332020
514040430
63023052
71134416
oct427610
9237435
10143240
1198689
126aa88
1350276
143a2b6
152c695
hex22f88

143240 has 16 divisors (see below), whose sum is σ = 322380. Its totient is φ = 57280.

The previous prime is 143239. The next prime is 143243. The reversal of 143240 is 42341.

Adding to 143240 its reverse (42341), we get a palindrome (185581).

It can be divided in two parts, 143 and 240, that added together give a palindrome (383).

143240 is nontrivially palindromic in base 11.

It can be written as a sum of positive squares in 2 ways, for example, as 139876 + 3364 = 374^2 + 58^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 143240.

It is not an unprimeable number, because it can be changed into a prime (143243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1751 + ... + 1830.

2143240 is an apocalyptic number.

143240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143240 is an abundant number, since it is smaller than the sum of its proper divisors (179140).

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

143240 is a wasteful number, since it uses less digits than its factorization.

143240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3592 (or 3588 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 143240 is about 378.4706065205. The cubic root of 143240 is about 52.3224539120.

The spelling of 143240 in words is "one hundred forty-three thousand, two hundred forty", and thus it is an iban number.

Divisors: 1 2 4 5 8 10 20 40 3581 7162 14324 17905 28648 35810 71620 143240