420100052 has 12 divisors (see below), whose sum is σ = 739425876. Its totient is φ = 208835520.

The previous prime is 420100049. The next prime is 420100081. The reversal of 420100052 is 250001024.

It can be written as a sum of positive squares in 2 ways, for example, as 273108676 + 146991376 = 16526^2 + 12124^2 .

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, 302849 + ... + 304232.

It is an arithmetic number, because the mean of its divisors is an integer number (61618823).

Almost surely, 2^420100052 is an apocalyptic number.

It is an amenable number.

420100052 is a deficient number, since it is larger than the sum of its proper divisors (319325824).

420100052 is a wasteful number, since it uses less digits than its factorization.

420100052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607258 (or 607256 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 420100052 is about 20496.3424054147. The cubic root of 420100052 is about 748.9467004021.

Adding to 420100052 its reverse (250001024), we get a palindrome (670101076).

The spelling of 420100052 in words is "four hundred twenty million, one hundred thousand, fifty-two".