232421004 has 36 divisors (see below), whose sum is σ = 587971384. Its totient is φ = 77412672.

The previous prime is 232420997. The next prime is 232421011. The reversal of 232421004 is 400124232.

It is an interprime number because it is at equal distance from previous prime (232420997) and next prime (232421011).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87504 + ... + 90120.

Almost surely, 2^232421004 is an apocalyptic number.

It is an amenable number.

232421004 is an abundant number, since it is smaller than the sum of its proper divisors (355550380).

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

232421004 is a wasteful number, since it uses less digits than its factorization.

232421004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5094 (or 5089 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 232421004 is about 15245.3600810214. The cubic root of 232421004 is about 614.8348237751.

Adding to 232421004 its reverse (400124232), we get a palindrome (632545236).

The spelling of 232421004 in words is "two hundred thirty-two million, four hundred twenty-one thousand, four".