142515985 has 16 divisors (see below), whose sum is σ = 175219200. Its totient is φ = 111228736.

The previous prime is 142515983. The next prime is 142516001. The reversal of 142515985 is 589515241.

It is a cyclic number.

It is not a de Polignac number, because 142515985 - 2¹ = 142515983 is a prime.

Its product of digits (72000) is a multiple of the sum of its prime divisors (2000).

It is not an unprimeable number, because it can be changed into a prime (142515983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90636 + ... + 92194.

It is an arithmetic number, because the mean of its divisors is an integer number (10951200).

Almost surely, 2^142515985 is an apocalyptic number.

It is an amenable number.

142515985 is a deficient number, since it is larger than the sum of its proper divisors (32703215).

142515985 is a wasteful number, since it uses less digits than its factorization.

142515985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000.

The product of its digits is 72000, while the sum is 40.

The square root of 142515985 is about 11938.0059055104. The cubic root of 142515985 is about 522.3414932460.

The spelling of 142515985 in words is "one hundred forty-two million, five hundred fifteen thousand, nine hundred eighty-five".