426642044420 has 12 divisors (see below), whose sum is σ = 895948293324. Its totient is φ = 170656817760.

The previous prime is 426642044419. The next prime is 426642044431. The reversal of 426642044420 is 24440246624.

It can be written as a sum of positive squares in 2 ways, for example, as 303186789376 + 123455255044 = 550624^2 + 351362^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10666051091 + ... + 10666051130.

It is an arithmetic number, because the mean of its divisors is an integer number (74662357777).

Almost surely, 2^426642044420 is an apocalyptic number.

It is an amenable number.

426642044420 is an abundant number, since it is smaller than the sum of its proper divisors (469306248904).

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

426642044420 is a wasteful number, since it uses less digits than its factorization.

426642044420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21332102230 (or 21332102228 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 38.

The spelling of 426642044420 in words is "four hundred twenty-six billion, six hundred forty-two million, forty-four thousand, four hundred twenty".