165131142 has 16 divisors (see below), whose sum is σ = 360286272. Its totient is φ = 50039720.

The previous prime is 165131129. The next prime is 165131159. The reversal of 165131142 is 241131561.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1250928 + ... + 1251059.

It is an arithmetic number, because the mean of its divisors is an integer number (22517892).

Almost surely, 2^165131142 is an apocalyptic number.

165131142 is an abundant number, since it is smaller than the sum of its proper divisors (195155130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165131142 is a wasteful number, since it uses less digits than its factorization.

165131142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502003.

The product of its digits is 720, while the sum is 24.

The square root of 165131142 is about 12850.3362601918. The cubic root of 165131142 is about 548.6259275708.

The spelling of 165131142 in words is "one hundred sixty-five million, one hundred thirty-one thousand, one hundred forty-two".