42907605 has 64 divisors (see below), whose sum is σ = 80183040. Its totient is φ = 19408896.

The previous prime is 42907603. The next prime is 42907693. The reversal of 42907605 is 50670924.

It is not a de Polignac number, because 42907605 - 2¹ = 42907603 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42907603) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 136929 + ... + 137241.

It is an arithmetic number, because the mean of its divisors is an integer number (1252860).

Almost surely, 2^42907605 is an apocalyptic number.

It is an amenable number.

42907605 is a deficient number, since it is larger than the sum of its proper divisors (37275435).

42907605 is a wasteful number, since it uses less digits than its factorization.

42907605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 42907605 is about 6550.3896830647. The cubic root of 42907605 is about 350.0886986081.

The spelling of 42907605 in words is "forty-two million, nine hundred seven thousand, six hundred five".