426167021 has 8 divisors (see below), whose sum is σ = 487323840. Its totient is φ = 365079168.

The previous prime is 426166991. The next prime is 426167029. The reversal of 426167021 is 120761624.

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 426167021 - 2¹⁰ = 426165997 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 (426167029) 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, 3236 + ... + 29373.

It is an arithmetic number, because the mean of its divisors is an integer number (60915480).

Almost surely, 2^426167021 is an apocalyptic number.

It is an amenable number.

426167021 is a deficient number, since it is larger than the sum of its proper divisors (61156819).

426167021 is a wasteful number, since it uses less digits than its factorization.

426167021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34483.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 426167021 is about 20643.8131409873. The cubic root of 426167021 is about 752.5348429616.

The spelling of 426167021 in words is "four hundred twenty-six million, one hundred sixty-seven thousand, twenty-one".