1372120042 has 12 divisors (see below), whose sum is σ = 2067125670. Its totient is φ = 683081616.

The previous prime is 1372120027. The next prime is 1372120051. The reversal of 1372120042 is 2400212731.

It can be written as a sum of positive squares in 3 ways, for example, as 429691441 + 942428601 = 20729^2 + 30699^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1372119995 and 1372120022.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 858388 + ... + 859984.

Almost surely, 2^1372120042 is an apocalyptic number.

1372120042 is a deficient number, since it is larger than the sum of its proper divisors (695005628).

1372120042 is an frugal number, since it uses more digits than its factorization.

1372120042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3465 (or 1868 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 1372120042 is about 37042.1387341498. The cubic root of 1372120042 is about 1111.2131427111.

Adding to 1372120042 its reverse (2400212731), we get a palindrome (3772332773).

The spelling of 1372120042 in words is "one billion, three hundred seventy-two million, one hundred twenty thousand, forty-two".