42609402 has 40 divisors (see below), whose sum is σ = 104160672. Its totient is φ = 12911400.

The previous prime is 42609397. The next prime is 42609467. The reversal of 42609402 is 20490624.

42609402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×42609402² = 3631122277595208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10174 + ... + 13737.

Almost surely, 2^42609402 is an apocalyptic number.

42609402 is an abundant number, since it is smaller than the sum of its proper divisors (61551270).

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

42609402 is a wasteful number, since it uses less digits than its factorization.

42609402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23936 (or 23927 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 42609402 is about 6527.5877627191. The cubic root of 42609402 is about 349.2757868597.

The spelling of 42609402 in words is "forty-two million, six hundred nine thousand, four hundred two".