142085983 has 24 divisors (see below), whose sum is σ = 165558960. Its totient is φ = 121159680.

The previous prime is 142085947. The next prime is 142085987. The reversal of 142085983 is 389580241.

It is a de Polignac number, because none of the positive numbers 2^k-142085983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142085987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 221343 + ... + 221983.

It is an arithmetic number, because the mean of its divisors is an integer number (6898290).

Almost surely, 2^142085983 is an apocalyptic number.

142085983 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

142085983 is a deficient number, since it is larger than the sum of its proper divisors (23472977).

142085983 is a wasteful number, since it uses less digits than its factorization.

142085983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 142085983 is about 11919.9825083764. The cubic root of 142085983 is about 521.8156243683.

The spelling of 142085983 in words is "one hundred forty-two million, eighty-five thousand, nine hundred eighty-three".