421865496 has 96 divisors (see below), whose sum is σ = 1276089360. Its totient is φ = 129796992.

The previous prime is 421865491. The next prime is 421865501. The reversal of 421865496 is 694568124.

421865496 is a `hidden beast` number, since 4 + 21 + 86 + 549 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (421865491) and next prime (421865501).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421865491) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16926 + ... + 33618.

Almost surely, 2^421865496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421865496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (638044680).

421865496 is an abundant number, since it is smaller than the sum of its proper divisors (854223864).

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

421865496 is a wasteful number, since it uses less digits than its factorization.

421865496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16727 (or 16711 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 421865496 is about 20539.3645471324. The cubic root of 421865496 is about 749.9943679577.

The spelling of 421865496 in words is "four hundred twenty-one million, eight hundred sixty-five thousand, four hundred ninety-six".