420891422 has 8 divisors (see below), whose sum is σ = 721528176. Its totient is φ = 180382032.

The previous prime is 420891407. The next prime is 420891437. The reversal of 420891422 is 224198024.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (420891407) and next prime (420891437).

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

It is a super-2 number, since 2×420891422² = 354299178226364168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15031823 + ... + 15031850.

It is an arithmetic number, because the mean of its divisors is an integer number (90191022).

Almost surely, 2^420891422 is an apocalyptic number.

420891422 is a deficient number, since it is larger than the sum of its proper divisors (300636754).

420891422 is a wasteful number, since it uses less digits than its factorization.

420891422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30063682.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 420891422 is about 20515.6384741007. The cubic root of 420891422 is about 749.4166854060.

The spelling of 420891422 in words is "four hundred twenty million, eight hundred ninety-one thousand, four hundred twenty-two".