42615880 has 32 divisors (see below), whose sum is σ = 96075000. Its totient is φ = 17012736.

The previous prime is 42615829. The next prime is 42615899. The reversal of 42615880 is 8851624.

It can be written as a sum of positive squares in 4 ways, for example, as 21511044 + 21104836 = 4638^2 + 4594^2 .

It is a super-2 number, since 2×42615880² = 3632226456348800, 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, 33496 + ... + 34744.

Almost surely, 2^42615880 is an apocalyptic number.

42615880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42615880 is an abundant number, since it is smaller than the sum of its proper divisors (53459120).

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

42615880 is a wasteful number, since it uses less digits than its factorization.

42615880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113 (or 2109 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 42615880 is about 6528.0839455387. The cubic root of 42615880 is about 349.2934863484.

The spelling of 42615880 in words is "forty-two million, six hundred fifteen thousand, eight hundred eighty".