1372139705 has 16 divisors (see below), whose sum is σ = 1663369344. Its totient is φ = 1086566400.

The previous prime is 1372139621. The next prime is 1372139707. The reversal of 1372139705 is 5079312731.

It is not a de Polignac number, because 1372139705 - 2⁸ = 1372139449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1372139707) 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, 206180 + ... + 212730.

It is an arithmetic number, because the mean of its divisors is an integer number (103960584).

Almost surely, 2^1372139705 is an apocalyptic number.

It is an amenable number.

1372139705 is a deficient number, since it is larger than the sum of its proper divisors (291229639).

1372139705 is a wasteful number, since it uses less digits than its factorization.

1372139705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6976.

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 1372139705 is about 37042.4041471393. The cubic root of 1372139705 is about 1111.2184507208.

The spelling of 1372139705 in words is "one billion, three hundred seventy-two million, one hundred thirty-nine thousand, seven hundred five".