42615906 has 32 divisors (see below), whose sum is σ = 93363840. Its totient is φ = 12907776.

The previous prime is 42615899. The next prime is 42615929. The reversal of 42615906 is 60951624.

It is a super-2 number, since 2×42615906² = 3632230888401672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4246 + ... + 10161.

It is an arithmetic number, because the mean of its divisors is an integer number (2917620).

Almost surely, 2^42615906 is an apocalyptic number.

42615906 is an abundant number, since it is smaller than the sum of its proper divisors (50747934).

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

42615906 is a wasteful number, since it uses less digits than its factorization.

42615906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14458.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 42615906 is about 6528.0859369343. The cubic root of 42615906 is about 349.2935573832.

The spelling of 42615906 in words is "forty-two million, six hundred fifteen thousand, nine hundred six".