142140087 has 12 divisors (see below), whose sum is σ = 206502504. Its totient is φ = 94211280.

The previous prime is 142140059. The next prime is 142140091. The reversal of 142140087 is 780041241.

It is not a de Polignac number, because 142140087 - 2¹¹ = 142138039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142140087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142140787) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44089 + ... + 47202.

It is an arithmetic number, because the mean of its divisors is an integer number (17208542).

Almost surely, 2^142140087 is an apocalyptic number.

142140087 is a deficient number, since it is larger than the sum of its proper divisors (64362417).

142140087 is a wasteful number, since it uses less digits than its factorization.

142140087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91470 (or 91467 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 142140087 is about 11922.2517587912. The cubic root of 142140087 is about 521.8818488924.

The spelling of 142140087 in words is "one hundred forty-two million, one hundred forty thousand, eighty-seven".