420115972 has 6 divisors (see below), whose sum is σ = 735202958. Its totient is φ = 210057984.

The previous prime is 420115961. The next prime is 420115991. The reversal of 420115972 is 279511024.

It can be written as a sum of positive squares in only one way, i.e., 321987136 + 98128836 = 17944^2 + 9906^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52514493 + ... + 52514500.

Almost surely, 2^420115972 is an apocalyptic number.

It is an amenable number.

420115972 is a deficient number, since it is larger than the sum of its proper divisors (315086986).

420115972 is a wasteful number, since it uses less digits than its factorization.

420115972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105028997 (or 105028995 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 420115972 is about 20496.7307637096. The cubic root of 420115972 is about 748.9561609110.

Adding to 420115972 its reverse (279511024), we get a palindrome (699626996).

The spelling of 420115972 in words is "four hundred twenty million, one hundred fifteen thousand, nine hundred seventy-two".