426387902421 has 8 divisors (see below), whose sum is σ = 612249295840. Its totient is φ = 262392555312.

The previous prime is 426387902407. The next prime is 426387902429. The reversal of 426387902421 is 124209783624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 426387902421 - 2¹⁹ = 426387378133 is a prime.

It is a super-2 number, since 2×426387902421² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426387902429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5466511531 + ... + 5466511608.

It is an arithmetic number, because the mean of its divisors is an integer number (76531161980).

Almost surely, 2^426387902421 is an apocalyptic number.

It is an amenable number.

426387902421 is a deficient number, since it is larger than the sum of its proper divisors (185861393419).

426387902421 is a wasteful number, since it uses less digits than its factorization.

426387902421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10933023155.

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 426387902421 in words is "four hundred twenty-six billion, three hundred eighty-seven million, nine hundred two thousand, four hundred twenty-one".