420254564 has 12 divisors (see below), whose sum is σ = 744306864. Its totient is φ = 207595464.

The previous prime is 420254563. The next prime is 420254579. The reversal of 420254564 is 465452024.

It is a super-2 number, since 2×420254564² = 353227797125660192, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 420254564.

It is not an unprimeable number, because it can be changed into a prime (420254561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 632582 + ... + 633245.

It is an arithmetic number, because the mean of its divisors is an integer number (62025572).

Almost surely, 2^420254564 is an apocalyptic number.

It is an amenable number.

420254564 is a deficient number, since it is larger than the sum of its proper divisors (324052300).

420254564 is a wasteful number, since it uses less digits than its factorization.

420254564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265914 (or 1265912 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

The square root of 420254564 is about 20500.1113167709. Note that the first 3 decimals coincide. The cubic root of 420254564 is about 749.0385095378.

The spelling of 420254564 in words is "four hundred twenty million, two hundred fifty-four thousand, five hundred sixty-four".