421412172 has 48 divisors (see below), whose sum is σ = 1039046400. Its totient is φ = 132563520.

The previous prime is 421412087. The next prime is 421412221. The reversal of 421412172 is 271214124.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57897 + ... + 64767.

It is an arithmetic number, because the mean of its divisors is an integer number (21646800).

Almost surely, 2^421412172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421412172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (519523200).

421412172 is an abundant number, since it is smaller than the sum of its proper divisors (617634228).

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

421412172 is a wasteful number, since it uses less digits than its factorization.

421412172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7166 (or 7164 counting only the distinct ones).

The product of its digits is 896, while the sum is 24.

The square root of 421412172 is about 20528.3260886025. The cubic root of 421412172 is about 749.7256311968.

Adding to 421412172 its reverse (271214124), we get a palindrome (692626296).

The spelling of 421412172 in words is "four hundred twenty-one million, four hundred twelve thousand, one hundred seventy-two".