142239753 has 16 divisors (see below), whose sum is σ = 211000960. Its totient is φ = 94702608.

The previous prime is 142239707. The next prime is 142239761. The reversal of 142239753 is 357932241.

It is not a de Polignac number, because 142239753 - 2⁸ = 142239497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142239763) 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 15 ways as a sum of consecutive naturals, for example, 20676 + ... + 26682.

It is an arithmetic number, because the mean of its divisors is an integer number (13187560).

Almost surely, 2^142239753 is an apocalyptic number.

It is an amenable number.

142239753 is a deficient number, since it is larger than the sum of its proper divisors (68761207).

142239753 is an equidigital number, since it uses as much as digits as its factorization.

142239753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6893 (or 6887 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 142239753 is about 11926.4308575533. The cubic root of 142239753 is about 522.0037983605.

The spelling of 142239753 in words is "one hundred forty-two million, two hundred thirty-nine thousand, seven hundred fifty-three".