426002930721 has 45 divisors (see below), whose sum is σ = 650624381121. Its totient is φ = 277779216888.

The previous prime is 426002930693. The next prime is 426002930753. The reversal of 426002930721 is 127039200624.

The square root of 426002930721 is 652689.

It is a perfect power (a square), and thus also a powerful number.

426002930721 is a `hidden beast` number, since 4 + 2 + 600 + 29 + 3 + 0 + 7 + 21 = 666.

It is not a de Polignac number, because 426002930721 - 2⁷ = 426002930593 is a prime.

It is a super-2 number, since 2×426002930721² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (426002930021) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 276086676 + ... + 276088218.

Almost surely, 2^426002930721 is an apocalyptic number.

426002930721 is the 652689-th square number.

426002930721 is the 326345-th centered octagonal number.

It is an amenable number.

426002930721 is a deficient number, since it is larger than the sum of its proper divisors (224621450400).

426002930721 is an frugal number, since it uses more digits than its factorization.

426002930721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3192 (or 1593 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

Multiplying 426002930721 by its sum of digits (36), we get a square (15336105505956 = 3916134²).

The spelling of 426002930721 in words is "four hundred twenty-six billion, two million, nine hundred thirty thousand, seven hundred twenty-one".