42485540 has 12 divisors (see below), whose sum is σ = 89219676. Its totient is φ = 16994208.

The previous prime is 42485537. The next prime is 42485557. The reversal of 42485540 is 4558424.

It can be written as a sum of positive squares in 2 ways, for example, as 10291264 + 32194276 = 3208^2 + 5674^2 .

It is a super-2 number, since 2×42485540² = 3610042218183200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 42485497 and 42485506.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1062119 + ... + 1062158.

It is an arithmetic number, because the mean of its divisors is an integer number (7434973).

Almost surely, 2^42485540 is an apocalyptic number.

It is an amenable number.

42485540 is an abundant number, since it is smaller than the sum of its proper divisors (46734136).

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

42485540 is a wasteful number, since it uses less digits than its factorization.

42485540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124286 (or 2124284 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

The square root of 42485540 is about 6518.0932794798. The cubic root of 42485540 is about 348.9370198037.

The spelling of 42485540 in words is "forty-two million, four hundred eighty-five thousand, five hundred forty".