426357621 has 8 divisors (see below), whose sum is σ = 631640960. Its totient is φ = 284238396.

The previous prime is 426357611. The next prime is 426357641. The reversal of 426357621 is 126753624.

426357621 is a `hidden beast` number, since 4 + 2 + 63 + 576 + 21 = 666.

It is not a de Polignac number, because 426357621 - 2⁹ = 426357109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426357611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7895485 + ... + 7895538.

It is an arithmetic number, because the mean of its divisors is an integer number (78955120).

Almost surely, 2^426357621 is an apocalyptic number.

It is an amenable number.

426357621 is a deficient number, since it is larger than the sum of its proper divisors (205283339).

426357621 is a wasteful number, since it uses less digits than its factorization.

426357621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15791032 (or 15791026 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 426357621 is about 20648.4290201458. The cubic root of 426357621 is about 752.6470147598.

The spelling of 426357621 in words is "four hundred twenty-six million, three hundred fifty-seven thousand, six hundred twenty-one".