421209360052 has 18 divisors (see below), whose sum is σ = 793826460294. Its totient is φ = 194402160000.

The previous prime is 421209360049. The next prime is 421209360109. The reversal of 421209360052 is 250063902124.

It can be written as a sum of positive squares in 3 ways, for example, as 289007308836 + 132202051216 = 537594^2 + 363596^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4635052 + ... + 4725052.

Almost surely, 2^421209360052 is an apocalyptic number.

It is an amenable number.

421209360052 is a deficient number, since it is larger than the sum of its proper divisors (372617100242).

421209360052 is an frugal number, since it uses more digits than its factorization.

421209360052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180019 (or 90016 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 421209360052 in words is "four hundred twenty-one billion, two hundred nine million, three hundred sixty thousand, fifty-two".