156142155 has 16 divisors (see below), whose sum is σ = 269045280. Its totient is φ = 76869888.

The previous prime is 156142153. The next prime is 156142201. The reversal of 156142155 is 551241651.

It is not a de Polignac number, because 156142155 - 2¹ = 156142153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (156142153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 400170 + ... + 400559.

It is an arithmetic number, because the mean of its divisors is an integer number (16815330).

Almost surely, 2^156142155 is an apocalyptic number.

156142155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

156142155 is a deficient number, since it is larger than the sum of its proper divisors (112903125).

156142155 is a wasteful number, since it uses less digits than its factorization.

156142155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800750.

The product of its digits is 6000, while the sum is 30.

The square root of 156142155 is about 12495.6854553882. The cubic root of 156142155 is about 538.4847266492.

It can be divided in two parts, 156 and 142155, that added together give a triangular number (142311 = T₅₃₃).

The spelling of 156142155 in words is "one hundred fifty-six million, one hundred forty-two thousand, one hundred fifty-five".