421402232 has 16 divisors (see below), whose sum is σ = 790389600. Its totient is φ = 210631680.

The previous prime is 421402231. The next prime is 421402243. The reversal of 421402232 is 232204124.

It is a super-2 number, since 2×421402232² = 355159682269163648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421402231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24632 + ... + 38072.

It is an arithmetic number, because the mean of its divisors is an integer number (49399350).

Almost surely, 2^421402232 is an apocalyptic number.

It is an amenable number.

421402232 is a deficient number, since it is larger than the sum of its proper divisors (368987368).

421402232 is a wasteful number, since it uses less digits than its factorization.

421402232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17366 (or 17362 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 421402232 is about 20528.0839826809. The cubic root of 421402232 is about 749.7197364680.

Adding to 421402232 its reverse (232204124), we get a palindrome (653606356).

The spelling of 421402232 in words is "four hundred twenty-one million, four hundred two thousand, two hundred thirty-two".