142153931 has 4 divisors (see below), whose sum is σ = 142639392. Its totient is φ = 141668472.

The previous prime is 142153919. The next prime is 142153939. The reversal of 142153931 is 139351241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 142153931 - 2¹⁴ = 142137547 is a prime.

It is a super-2 number, since 2×142153931² = 40415480197505522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142153894 and 142153903.

It is not an unprimeable number, because it can be changed into a prime (142153939) 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, 242291 + ... + 242876.

It is an arithmetic number, because the mean of its divisors is an integer number (35659848).

Almost surely, 2^142153931 is an apocalyptic number.

142153931 is a deficient number, since it is larger than the sum of its proper divisors (485461).

142153931 is an equidigital number, since it uses as much as digits as its factorization.

142153931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485460.

The product of its digits is 3240, while the sum is 29.

The square root of 142153931 is about 11922.8323396750. The cubic root of 142153931 is about 521.8987915624.

The spelling of 142153931 in words is "one hundred forty-two million, one hundred fifty-three thousand, nine hundred thirty-one".