421042321232 has 20 divisors (see below), whose sum is σ = 878520997620. Its totient is φ = 194327225088.

The previous prime is 421042321181. The next prime is 421042321261. The reversal of 421042321232 is 232123240124.

It can be written as a sum of positive squares in 2 ways, for example, as 237964449856 + 183077871376 = 487816^2 + 427876^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

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, 1012120757 + ... + 1012121172.

It is an arithmetic number, because the mean of its divisors is an integer number (43926049881).

Almost surely, 2^421042321232 is an apocalyptic number.

It is an amenable number.

421042321232 is an abundant number, since it is smaller than the sum of its proper divisors (457478676388).

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

421042321232 is a wasteful number, since it uses less digits than its factorization.

421042321232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2024241950 (or 2024241944 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 421042321232 its reverse (232123240124), we get a palindrome (653165561356).

The spelling of 421042321232 in words is "four hundred twenty-one billion, forty-two million, three hundred twenty-one thousand, two hundred thirty-two".