426824021 has 8 divisors (see below), whose sum is σ = 459965184. Its totient is φ = 393726960.

The previous prime is 426824017. The next prime is 426824023. The reversal of 426824021 is 120428624.

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 426824021 - 2² = 426824017 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 (426824023) 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, 10676 + ... + 31106.

It is an arithmetic number, because the mean of its divisors is an integer number (57495648).

Almost surely, 2^426824021 is an apocalyptic number.

It is an amenable number.

426824021 is a deficient number, since it is larger than the sum of its proper divisors (33141163).

426824021 is a wasteful number, since it uses less digits than its factorization.

426824021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22051.

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 426824021 is about 20659.7197706068. The cubic root of 426824021 is about 752.9213592906.

The spelling of 426824021 in words is "four hundred twenty-six million, eight hundred twenty-four thousand, twenty-one".