142817137 has 4 divisors (see below), whose sum is σ = 142893936. Its totient is φ = 142740340.

The previous prime is 142817123. The next prime is 142817173. The reversal of 142817137 is 731718241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 731718241 = 61 ⋅11995381.

It is a cyclic number.

It is not a de Polignac number, because 142817137 - 2¹¹ = 142815089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145817137) 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 3 ways as a sum of consecutive naturals, for example, 35539 + ... + 39352.

It is an arithmetic number, because the mean of its divisors is an integer number (35723484).

Almost surely, 2^142817137 is an apocalyptic number.

It is an amenable number.

142817137 is a deficient number, since it is larger than the sum of its proper divisors (76799).

142817137 is an equidigital number, since it uses as much as digits as its factorization.

142817137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76798.

The product of its digits is 9408, while the sum is 34.

The square root of 142817137 is about 11950.6124110859. The cubic root of 142817137 is about 522.7091561317.

The spelling of 142817137 in words is "one hundred forty-two million, eight hundred seventeen thousand, one hundred thirty-seven".