421204052 has 6 divisors (see below), whose sum is σ = 737107098. Its totient is φ = 210602024.

The previous prime is 421204031. The next prime is 421204057. The reversal of 421204052 is 250402124.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 282105616 + 139098436 = 16796^2 + 11794^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421204057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52650503 + ... + 52650510.

It is an arithmetic number, because the mean of its divisors is an integer number (122851183).

Almost surely, 2^421204052 is an apocalyptic number.

It is an amenable number.

421204052 is a deficient number, since it is larger than the sum of its proper divisors (315903046).

421204052 is a wasteful number, since it uses less digits than its factorization.

421204052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105301017 (or 105301015 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 421204052 is about 20523.2563692997. The cubic root of 421204052 is about 749.6021902190.

Adding to 421204052 its reverse (250402124), we get a palindrome (671606176).

The spelling of 421204052 in words is "four hundred twenty-one million, two hundred four thousand, fifty-two".