142347239 has 6 divisors (see below), whose sum is σ = 151213464. Its totient is φ = 133973600.

The previous prime is 142347229. The next prime is 142347263. The reversal of 142347239 is 932743241.

It is not a de Polignac number, because 142347239 - 2⁸ = 142346983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142347199 and 142347208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142347229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 245987 + ... + 246564.

It is an arithmetic number, because the mean of its divisors is an integer number (25202244).

Almost surely, 2^142347239 is an apocalyptic number.

142347239 is a deficient number, since it is larger than the sum of its proper divisors (8866225).

142347239 is an equidigital number, since it uses as much as digits as its factorization.

142347239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492585 (or 492568 counting only the distinct ones).

The product of its digits is 36288, while the sum is 35.

The square root of 142347239 is about 11930.9362164082. The cubic root of 142347239 is about 522.1352524067.

The spelling of 142347239 in words is "one hundred forty-two million, three hundred forty-seven thousand, two hundred thirty-nine".