421542304 has 12 divisors (see below), whose sum is σ = 829911474. Its totient is φ = 210771136.

The previous prime is 421542283. The next prime is 421542343. The reversal of 421542304 is 403245124.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 397922704 + 23619600 = 19948^2 + 4860^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6586567 + ... + 6586630.

Almost surely, 2^421542304 is an apocalyptic number.

It is an amenable number.

421542304 is a deficient number, since it is larger than the sum of its proper divisors (408369170).

421542304 is a wasteful number, since it uses less digits than its factorization.

421542304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13173207 (or 13173199 counting only the distinct ones).

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

The square root of 421542304 is about 20531.4954155804. The cubic root of 421542304 is about 749.8027949663.

Adding to 421542304 its reverse (403245124), we get a palindrome (824787428).

The spelling of 421542304 in words is "four hundred twenty-one million, five hundred forty-two thousand, three hundred four".