421312244 has 12 divisors (see below), whose sum is σ = 742925568. Its totient is φ = 209047800.

The previous prime is 421312219. The next prime is 421312249. The reversal of 421312244 is 442213124.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421312249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401492 + ... + 402539.

It is an arithmetic number, because the mean of its divisors is an integer number (61910464).

Almost surely, 2^421312244 is an apocalyptic number.

It is an amenable number.

421312244 is a deficient number, since it is larger than the sum of its proper divisors (321613324).

421312244 is a wasteful number, since it uses less digits than its factorization.

421312244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804166 (or 804164 counting only the distinct ones).

The product of its digits is 1536, while the sum is 23.

The square root of 421312244 is about 20525.8920390808. The cubic root of 421312244 is about 749.6663665699. Note that the first 3 decimals are identical.

Adding to 421312244 its reverse (442213124), we get a palindrome (863525368).

The spelling of 421312244 in words is "four hundred twenty-one million, three hundred twelve thousand, two hundred forty-four".