421302432 has 96 divisors (see below), whose sum is σ = 1188758592. Its totient is φ = 130166784.

The previous prime is 421302397. The next prime is 421302473. The reversal of 421302432 is 234203124.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×421302432² = 354991478418229248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421302399 and 421302408.

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, 107418 + ... + 111270.

It is an arithmetic number, because the mean of its divisors is an integer number (12382902).

Almost surely, 2^421302432 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 421302432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (594379296).

421302432 is an abundant number, since it is smaller than the sum of its proper divisors (767456160).

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

421302432 is a wasteful number, since it uses less digits than its factorization.

421302432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3950 (or 3942 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 421302432 is about 20525.6530224985. The cubic root of 421302432 is about 749.6605468297.

Adding to 421302432 its reverse (234203124), we get a palindrome (655505556).

The spelling of 421302432 in words is "four hundred twenty-one million, three hundred two thousand, four hundred thirty-two".