421431044 has 12 divisors (see below), whose sum is σ = 747607644. Its totient is φ = 207828864.

The previous prime is 421431029. The next prime is 421431083. The reversal of 421431044 is 440134124.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 256000000 + 165431044 = 16000^2 + 12862^2 .

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, 721337 + ... + 721920.

It is an arithmetic number, because the mean of its divisors is an integer number (62300637).

Almost surely, 2^421431044 is an apocalyptic number.

It is an amenable number.

421431044 is a deficient number, since it is larger than the sum of its proper divisors (326176600).

421431044 is a wasteful number, since it uses less digits than its factorization.

421431044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443334 (or 1443332 counting only the distinct ones).

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

The square root of 421431044 is about 20528.7857410028. The cubic root of 421431044 is about 749.7368226240.

Adding to 421431044 its reverse (440134124), we get a palindrome (861565168).

The spelling of 421431044 in words is "four hundred twenty-one million, four hundred thirty-one thousand, forty-four".