142170131 has 2 divisors, whose sum is σ = 142170132. Its totient is φ = 142170130.

The previous prime is 142170097. The next prime is 142170157. The reversal of 142170131 is 131071241.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142170131 - 2¹⁴ = 142153747 is a prime.

It is a super-2 number, since 2×142170131² = 40424692297114322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142170631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71085065 + 71085066.

It is an arithmetic number, because the mean of its divisors is an integer number (71085066).

Almost surely, 2^142170131 is an apocalyptic number.

142170131 is a deficient number, since it is larger than the sum of its proper divisors (1).

142170131 is an equidigital number, since it uses as much as digits as its factorization.

142170131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 142170131 is about 11923.5116890956. The cubic root of 142170131 is about 521.9186161737.

The spelling of 142170131 in words is "one hundred forty-two million, one hundred seventy thousand, one hundred thirty-one".