142322539 has 8 divisors (see below), whose sum is σ = 144924048. Its totient is φ = 139735200.

The previous prime is 142322527. The next prime is 142322563. The reversal of 142322539 is 935223241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142322539 - 2²³ = 133933931 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142322539.

It is not an unprimeable number, because it can be changed into a prime (142322569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17889 + ... + 24589.

It is an arithmetic number, because the mean of its divisors is an integer number (18115506).

Almost surely, 2^142322539 is an apocalyptic number.

142322539 is a deficient number, since it is larger than the sum of its proper divisors (2601509).

142322539 is an equidigital number, since it uses as much as digits as its factorization.

142322539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7085.

The product of its digits is 12960, while the sum is 31.

The square root of 142322539 is about 11929.9010473683. The cubic root of 142322539 is about 522.1050504704.

The spelling of 142322539 in words is "one hundred forty-two million, three hundred twenty-two thousand, five hundred thirty-nine".