421136632 has 16 divisors (see below), whose sum is σ = 902435760. Its totient is φ = 180487104.

The previous prime is 421136629. The next prime is 421136641. The reversal of 421136632 is 236631124.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 421136632.

It is a congruent number.

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, 3760093 + ... + 3760204.

It is an arithmetic number, because the mean of its divisors is an integer number (56402235).

Almost surely, 2^421136632 is an apocalyptic number.

It is an amenable number.

421136632 is an abundant number, since it is smaller than the sum of its proper divisors (481299128).

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

421136632 is a wasteful number, since it uses less digits than its factorization.

421136632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7520310 (or 7520306 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

The square root of 421136632 is about 20521.6137766989. The cubic root of 421136632 is about 749.5621930758.

Adding to 421136632 its reverse (236631124), we get a palindrome (657767756).

The spelling of 421136632 in words is "four hundred twenty-one million, one hundred thirty-six thousand, six hundred thirty-two".