421504324 has 12 divisors (see below), whose sum is σ = 781022844. Its totient is φ = 198354944.

The previous prime is 421504277. The next prime is 421504373. The reversal of 421504324 is 423405124.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 225000000 + 196504324 = 15000^2 + 14018^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3099229 + ... + 3099364.

It is an arithmetic number, because the mean of its divisors is an integer number (65085237).

Almost surely, 2^421504324 is an apocalyptic number.

It is an amenable number.

421504324 is a deficient number, since it is larger than the sum of its proper divisors (359518520).

421504324 is a wasteful number, since it uses less digits than its factorization.

421504324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6198614 (or 6198612 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 421504324 is about 20530.5704742952. The cubic root of 421504324 is about 749.7802757828.

Adding to 421504324 its reverse (423405124), we get a palindrome (844909448).

The spelling of 421504324 in words is "four hundred twenty-one million, five hundred four thousand, three hundred twenty-four".