42537490 has 16 divisors (see below), whose sum is σ = 79208280. Its totient is φ = 16428160.

The previous prime is 42537479. The next prime is 42537503. The reversal of 42537490 is 9473524.

It can be written as a sum of positive squares in 4 ways, for example, as 37075921 + 5461569 = 6089^2 + 2337^2 .

It is a super-4 number, since 4×42537490⁴ (a number of 32 digits) contains 4444 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, 73051 + ... + 73630.

Almost surely, 2^42537490 is an apocalyptic number.

42537490 is a deficient number, since it is larger than the sum of its proper divisors (36670790).

42537490 is a wasteful number, since it uses less digits than its factorization.

42537490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146717.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 42537490 is about 6522.0771231257. The cubic root of 42537490 is about 349.0791849945.

The spelling of 42537490 in words is "forty-two million, five hundred thirty-seven thousand, four hundred ninety".