162129139 has 16 divisors (see below), whose sum is σ = 173435904. Its totient is φ = 151228000.

The previous prime is 162129133. The next prime is 162129161. The reversal of 162129139 is 931921261.

It is a cyclic number.

It is not a de Polignac number, because 162129139 - 2¹³ = 162120947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162129133) 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, 164442 + ... + 165424.

It is an arithmetic number, because the mean of its divisors is an integer number (10839744).

Almost surely, 2^162129139 is an apocalyptic number.

162129139 is a deficient number, since it is larger than the sum of its proper divisors (11306765).

162129139 is a wasteful number, since it uses less digits than its factorization.

162129139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178.

The product of its digits is 5832, while the sum is 34.

The square root of 162129139 is about 12732.9941097921. The cubic root of 162129139 is about 545.2809919300.

The spelling of 162129139 in words is "one hundred sixty-two million, one hundred twenty-nine thousand, one hundred thirty-nine".