420972706 has 16 divisors (see below), whose sum is σ = 787273920. Its totient is φ = 164015280.

The previous prime is 420972701. The next prime is 420972719. The reversal of 420972706 is 607279024.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (420972701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1366641 + ... + 1366948.

It is an arithmetic number, because the mean of its divisors is an integer number (49204620).

Almost surely, 2^420972706 is an apocalyptic number.

420972706 is a deficient number, since it is larger than the sum of its proper divisors (366301214).

420972706 is a wasteful number, since it uses less digits than its factorization.

420972706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2733609.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 420972706 is about 20517.6194038197. The cubic root of 420972706 is about 749.4649256106.

The spelling of 420972706 in words is "four hundred twenty million, nine hundred seventy-two thousand, seven hundred six".