421052052 has 24 divisors (see below), whose sum is σ = 991996096. Its totient is φ = 138987648.

The previous prime is 421052029. The next prime is 421052057. The reversal of 421052052 is 250250124.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421052057) 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, 169093 + ... + 171564.

Almost surely, 2^421052052 is an apocalyptic number.

It is an amenable number.

421052052 is an abundant number, since it is smaller than the sum of its proper divisors (570944044).

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

421052052 is a wasteful number, since it uses less digits than its factorization.

421052052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340767 (or 340765 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 421052052 is about 20519.5529191062. The cubic root of 421052052 is about 749.5120096672.

The spelling of 421052052 in words is "four hundred twenty-one million, fifty-two thousand, fifty-two".