720157612042 has 12 divisors (see below), whose sum is σ = 1187367302898. Its totient is φ = 327344369000.

The previous prime is 720157611967. The next prime is 720157612051. The reversal of 720157612042 is 240216751027.

It can be written as a sum of positive squares in only one way, i.e., 716310015201 + 3847596841 = 846351^2 + 62029^2 .

It is a junction number, because it is equal to n+sod(n) for n = 720157611992 and 720157612010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1487928709 + ... + 1487929192.

Almost surely, 2^720157612042 is an apocalyptic number.

720157612042 is a deficient number, since it is larger than the sum of its proper divisors (467209690856).

720157612042 is a wasteful number, since it uses less digits than its factorization.

720157612042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2975857925 (or 2975857914 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The spelling of 720157612042 in words is "seven hundred twenty billion, one hundred fifty-seven million, six hundred twelve thousand, forty-two".