42626642420 has 12 divisors (see below), whose sum is σ = 89515949124. Its totient is φ = 17050656960.

The previous prime is 42626642389. The next prime is 42626642423. The reversal of 42626642420 is 2424662624.

It can be written as a sum of positive squares in 2 ways, for example, as 29896484836 + 12730157584 = 172906^2 + 112828^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42626642423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1065666041 + ... + 1065666080.

It is an arithmetic number, because the mean of its divisors is an integer number (7459662427).

Almost surely, 2^42626642420 is an apocalyptic number.

It is an amenable number.

42626642420 is an abundant number, since it is smaller than the sum of its proper divisors (46889306704).

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

42626642420 is a wasteful number, since it uses less digits than its factorization.

42626642420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131332130 (or 2131332128 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 38.

The spelling of 42626642420 in words is "forty-two billion, six hundred twenty-six million, six hundred forty-two thousand, four hundred twenty".