421222052 has 12 divisors (see below), whose sum is σ = 738117660. Its totient is φ = 210331296.

The previous prime is 421222007. The next prime is 421222093. The reversal of 421222052 is 250222124.

It can be written as a sum of positive squares in 2 ways, for example, as 338339236 + 82882816 = 18394^2 + 9104^2 .

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, 66527 + ... + 72582.

It is an arithmetic number, because the mean of its divisors is an integer number (61509805).

Almost surely, 2^421222052 is an apocalyptic number.

It is an amenable number.

421222052 is a deficient number, since it is larger than the sum of its proper divisors (316895608).

421222052 is a wasteful number, since it uses less digits than its factorization.

421222052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139870 (or 139868 counting only the distinct ones).

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

The square root of 421222052 is about 20523.6948915150. The cubic root of 421222052 is about 749.6128680580.

Adding to 421222052 its reverse (250222124), we get a palindrome (671444176).

The spelling of 421222052 in words is "four hundred twenty-one million, two hundred twenty-two thousand, fifty-two".