42537172 has 24 divisors (see below), whose sum is σ = 76730472. Its totient is φ = 20620800.

The previous prime is 42537169. The next prime is 42537203. The reversal of 42537172 is 27173524.

It can be written as a sum of positive squares in 4 ways, for example, as 104976 + 42432196 = 324^2 + 6514^2 .

It is a super-2 number, since 2×42537172² = 3618822003515168, which contains 22 as substring.

It is a congruent number.

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, 28968 + ... + 30400.

It is an arithmetic number, because the mean of its divisors is an integer number (3197103).

It is a vampire number, since it can be written as 5732 ⋅ 7421 (with its own digits).

Almost surely, 2^42537172 is an apocalyptic number.

It is an amenable number.

42537172 is a deficient number, since it is larger than the sum of its proper divisors (34193300).

42537172 is a wasteful number, since it uses less digits than its factorization.

42537172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659 (or 1657 counting only the distinct ones).

The product of its digits is 11760, while the sum is 31.

The square root of 42537172 is about 6522.0527443436. The cubic root of 42537172 is about 349.0783151151.

The spelling of 42537172 in words is "forty-two million, five hundred thirty-seven thousand, one hundred seventy-two".