120000172147 has 16 divisors (see below), whose sum is σ = 128318073408. Its totient is φ = 111942673920.

The previous prime is 120000172139. The next prime is 120000172153. The reversal of 120000172147 is 741271000021.

It is not a de Polignac number, because 120000172147 - 2³ = 120000172139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120000172447) 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, 2763133 + ... + 2806225.

It is an arithmetic number, because the mean of its divisors is an integer number (8019879588).

Almost surely, 2^120000172147 is an apocalyptic number.

120000172147 is a deficient number, since it is larger than the sum of its proper divisors (8317901261).

120000172147 is a wasteful number, since it uses less digits than its factorization.

120000172147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46110.

The product of its (nonzero) digits is 784, while the sum is 25.

Adding to 120000172147 its reverse (741271000021), we get a palindrome (861271172168).

The spelling of 120000172147 in words is "one hundred twenty billion, one hundred seventy-two thousand, one hundred forty-seven".