420722452 has 24 divisors (see below), whose sum is σ = 767416832. Its totient is φ = 201592800.

The previous prime is 420722447. The next prime is 420722501. The reversal of 420722452 is 254227024.

It is a self number, because there is not a number n which added to its sum of digits gives 420722452.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3699 + ... + 29242.

Almost surely, 2^420722452 is an apocalyptic number.

It is an amenable number.

420722452 is a deficient number, since it is larger than the sum of its proper divisors (346694380).

420722452 is a wasteful number, since it uses less digits than its factorization.

420722452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33079 (or 33077 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 28.

The square root of 420722452 is about 20511.5199826829. The cubic root of 420722452 is about 749.3163856772.

Adding to 420722452 its reverse (254227024), we get a palindrome (674949476).

The spelling of 420722452 in words is "four hundred twenty million, seven hundred twenty-two thousand, four hundred fifty-two".