421390968 has 96 divisors (see below), whose sum is σ = 1177655760. Its totient is φ = 125199360.

The previous prime is 421390943. The next prime is 421390993. The reversal of 421390968 is 869093124.

It is an interprime number because it is at equal distance from previous prime (421390943) and next prime (421390993).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145858 + ... + 148718.

Almost surely, 2^421390968 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 421390968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (588827880).

421390968 is an abundant number, since it is smaller than the sum of its proper divisors (756264792).

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

421390968 is a wasteful number, since it uses less digits than its factorization.

421390968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2925 (or 2902 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 421390968 is about 20527.8096249941. The cubic root of 421390968 is about 749.7130564541.

The spelling of 421390968 in words is "four hundred twenty-one million, three hundred ninety thousand, nine hundred sixty-eight".