421506332 has 24 divisors (see below), whose sum is σ = 794976000. Its totient is φ = 194394816.

The previous prime is 421506311. The next prime is 421506359. The reversal of 421506332 is 233605124.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99269 + ... + 103427.

It is an arithmetic number, because the mean of its divisors is an integer number (33124000).

Almost surely, 2^421506332 is an apocalyptic number.

It is an amenable number.

421506332 is a deficient number, since it is larger than the sum of its proper divisors (373469668).

421506332 is a wasteful number, since it uses less digits than its factorization.

421506332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6125 (or 6123 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 421506332 is about 20530.6193769209. The cubic root of 421506332 is about 749.7814664043.

The spelling of 421506332 in words is "four hundred twenty-one million, five hundred six thousand, three hundred thirty-two".