421204464 has 60 divisors (see below), whose sum is σ = 1240837000. Its totient is φ = 133011072.

The previous prime is 421204457. The next prime is 421204493. The reversal of 421204464 is 464402124.

It is a happy number.

421204464 is a `hidden beast` number, since 4 + 212 + 0 + 446 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74239 + ... + 79710.

Almost surely, 2^421204464 is an apocalyptic number.

It is an amenable number.

421204464 is an abundant number, since it is smaller than the sum of its proper divisors (819632536).

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

421204464 is a wasteful number, since it uses less digits than its factorization.

421204464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153982 (or 153973 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 421204464 is about 20523.2664066907. The cubic root of 421204464 is about 749.6024346263.

Adding to 421204464 its reverse (464402124), we get a palindrome (885606588).

The spelling of 421204464 in words is "four hundred twenty-one million, two hundred four thousand, four hundred sixty-four".