421132044 has 24 divisors (see below), whose sum is σ = 998752048. Its totient is φ = 138075840.

The previous prime is 421132043. The next prime is 421132087. The reversal of 421132044 is 440231124.

It is a self number, because there is not a number n which added to its sum of digits gives 421132044.

It is not an unprimeable number, because it can be changed into a prime (421132043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286927 + ... + 288390.

Almost surely, 2^421132044 is an apocalyptic number.

It is an amenable number.

421132044 is an abundant number, since it is smaller than the sum of its proper divisors (577620004).

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

421132044 is a wasteful number, since it uses less digits than its factorization.

421132044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575385 (or 575383 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 421132044 is about 20521.5019918134. The cubic root of 421132044 is about 749.5594710741.

Adding to 421132044 its reverse (440231124), we get a palindrome (861363168).

The spelling of 421132044 in words is "four hundred twenty-one million, one hundred thirty-two thousand, forty-four".