421964718 has 32 divisors (see below), whose sum is σ = 1021227264. Its totient is φ = 113469312.

The previous prime is 421964707. The next prime is 421964729. The reversal of 421964718 is 817469124.

It is an interprime number because it is at equal distance from previous prime (421964707) and next prime (421964729).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 421964718.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 294780 + ... + 296207.

It is an arithmetic number, because the mean of its divisors is an integer number (31913352).

Almost surely, 2^421964718 is an apocalyptic number.

421964718 is an abundant number, since it is smaller than the sum of its proper divisors (599262546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421964718 is a wasteful number, since it uses less digits than its factorization.

421964718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591016.

The product of its digits is 96768, while the sum is 42.

The square root of 421964718 is about 20541.7798157803. The cubic root of 421964718 is about 750.0531624538.

The spelling of 421964718 in words is "four hundred twenty-one million, nine hundred sixty-four thousand, seven hundred eighteen".