1372120517 has 4 divisors (see below), whose sum is σ = 1374558240. Its totient is φ = 1369682796.

The previous prime is 1372120513. The next prime is 1372120523. The reversal of 1372120517 is 7150212731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1372120517 - 2² = 1372120513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1372120517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1372120513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1218017 + ... + 1219142.

It is an arithmetic number, because the mean of its divisors is an integer number (343639560).

Almost surely, 2^1372120517 is an apocalyptic number.

It is an amenable number.

1372120517 is a deficient number, since it is larger than the sum of its proper divisors (2437723).

1372120517 is an equidigital number, since it uses as much as digits as its factorization.

1372120517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2437722.

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 1372120517 is about 37042.1451457661. The cubic root of 1372120517 is about 1111.2132709375.

The spelling of 1372120517 in words is "one billion, three hundred seventy-two million, one hundred twenty thousand, five hundred seventeen".