426335021 has 8 divisors (see below), whose sum is σ = 496433664. Its totient is φ = 358534800.

The previous prime is 426335017. The next prime is 426335023. The reversal of 426335021 is 120533624.

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

It is a cyclic number.

It is not a de Polignac number, because 426335021 - 2² = 426335017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426335023) 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, 574205 + ... + 574946.

It is an arithmetic number, because the mean of its divisors is an integer number (62054208).

Almost surely, 2^426335021 is an apocalyptic number.

It is an amenable number.

426335021 is a deficient number, since it is larger than the sum of its proper divisors (70098643).

426335021 is a wasteful number, since it uses less digits than its factorization.

426335021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149211.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 426335021 is about 20647.8817557637. The cubic root of 426335021 is about 752.6337159685.

Adding to 426335021 its reverse (120533624), we get a palindrome (546868645).

The spelling of 426335021 in words is "four hundred twenty-six million, three hundred thirty-five thousand, twenty-one".