421342444 has 24 divisors (see below), whose sum is σ = 742855680. Its totient is φ = 209104464.

The previous prime is 421342429. The next prime is 421342447. The reversal of 421342444 is 444243124.

It is not an unprimeable number, because it can be changed into a prime (421342447) 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, 501777 + ... + 502615.

It is an arithmetic number, because the mean of its divisors is an integer number (30952320).

Almost surely, 2^421342444 is an apocalyptic number.

It is an amenable number.

421342444 is a deficient number, since it is larger than the sum of its proper divisors (321513236).

421342444 is a wasteful number, since it uses less digits than its factorization.

421342444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1629 (or 1627 counting only the distinct ones).

The product of its digits is 12288, while the sum is 28.

The square root of 421342444 is about 20526.6276821109. The cubic root of 421342444 is about 749.6842783710.

Adding to 421342444 its reverse (444243124), we get a palindrome (865585568).

The spelling of 421342444 in words is "four hundred twenty-one million, three hundred forty-two thousand, four hundred forty-four".