420279651 has 16 divisors (see below), whose sum is σ = 679240320. Its totient is φ = 254714760.

The previous prime is 420279641. The next prime is 420279653. The reversal of 420279651 is 156972024.

It is not a de Polignac number, because 420279651 - 2¹⁰ = 420278627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420279653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 707245 + ... + 707838.

It is an arithmetic number, because the mean of its divisors is an integer number (42452520).

Almost surely, 2^420279651 is an apocalyptic number.

420279651 is a deficient number, since it is larger than the sum of its proper divisors (258960669).

420279651 is a wasteful number, since it uses less digits than its factorization.

420279651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415103 (or 1415097 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 420279651 is about 20500.7231823660. The cubic root of 420279651 is about 749.0534138020.

The spelling of 420279651 in words is "four hundred twenty million, two hundred seventy-nine thousand, six hundred fifty-one".