421020044 has 6 divisors (see below), whose sum is σ = 736785084. Its totient is φ = 210510020.

The previous prime is 421020029. The next prime is 421020053. The reversal of 421020044 is 440020124.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52627502 + ... + 52627509.

It is an arithmetic number, because the mean of its divisors is an integer number (122797514).

Almost surely, 2^421020044 is an apocalyptic number.

It is an amenable number.

421020044 is a deficient number, since it is larger than the sum of its proper divisors (315765040).

421020044 is a wasteful number, since it uses less digits than its factorization.

421020044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105255015 (or 105255013 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 421020044 is about 20518.7729652628. The cubic root of 421020044 is about 749.4930167753.

Adding to 421020044 its reverse (440020124), we get a palindrome (861040168).

The spelling of 421020044 in words is "four hundred twenty-one million, twenty thousand, forty-four".