42507810 has 24 divisors (see below), whose sum is σ = 110520540. Its totient is φ = 11335392.

The previous prime is 42507809. The next prime is 42507833. The reversal of 42507810 is 1870524.

It can be written as a sum of positive squares in 2 ways, for example, as 42107121 + 400689 = 6489^2 + 633^2 .

It is a super-2 number, since 2×42507810² = 3613827821992200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 236065 + ... + 236244.

Almost surely, 2^42507810 is an apocalyptic number.

42507810 is an abundant number, since it is smaller than the sum of its proper divisors (68012730).

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

42507810 is a wasteful number, since it uses less digits than its factorization.

42507810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472322 (or 472319 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 42507810 is about 6519.8013773427. The cubic root of 42507810 is about 348.9979775637.

The spelling of 42507810 in words is "forty-two million, five hundred seven thousand, eight hundred ten".