42504290 has 16 divisors (see below), whose sum is σ = 78374520. Its totient is φ = 16586880.

The previous prime is 42504281. The next prime is 42504313. The reversal of 42504290 is 9240524.

It can be written as a sum of positive squares in 4 ways, for example, as 27888961 + 14615329 = 5281^2 + 3823^2 .

It is a super-2 number, since 2×42504290² = 3613229336808200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51425 + ... + 52244.

Almost surely, 2^42504290 is an apocalyptic number.

42504290 is a deficient number, since it is larger than the sum of its proper divisors (35870230).

42504290 is a wasteful number, since it uses less digits than its factorization.

42504290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103717.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 42504290 is about 6519.5314248802. The cubic root of 42504290 is about 348.9883439866.

The spelling of 42504290 in words is "forty-two million, five hundred four thousand, two hundred ninety".