142313985 has 24 divisors (see below), whose sum is σ = 269103744. Its totient is φ = 69000480.

The previous prime is 142313939. The next prime is 142313989. The reversal of 142313985 is 589313241.

It is not a de Polignac number, because 142313985 - 2⁶ = 142313921 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142313989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143257 + ... + 144246.

It is an arithmetic number, because the mean of its divisors is an integer number (11212656).

Almost surely, 2^142313985 is an apocalyptic number.

142313985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142313985 is a deficient number, since it is larger than the sum of its proper divisors (126789759).

142313985 is a wasteful number, since it uses less digits than its factorization.

142313985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287525 (or 287522 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 142313985 is about 11929.5425310445. The cubic root of 142313985 is about 522.0945902483.

The spelling of 142313985 in words is "one hundred forty-two million, three hundred thirteen thousand, nine hundred eighty-five".