142342313 has 4 divisors (see below), whose sum is σ = 142508880. Its totient is φ = 142175748.

The previous prime is 142342303. The next prime is 142342327. The reversal of 142342313 is 313243241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142342313 is a prime.

It is a super-2 number, since 2×142342313² = 40522668140379938, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142342303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81995 + ... + 83712.

It is an arithmetic number, because the mean of its divisors is an integer number (35627220).

Almost surely, 2^142342313 is an apocalyptic number.

It is an amenable number.

142342313 is a deficient number, since it is larger than the sum of its proper divisors (166567).

142342313 is an equidigital number, since it uses as much as digits as its factorization.

142342313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166566.

The product of its digits is 1728, while the sum is 23.

The square root of 142342313 is about 11930.7297765057. The cubic root of 142342313 is about 522.1292294168.

Adding to 142342313 its reverse (313243241), we get a palindrome (455585554).

The spelling of 142342313 in words is "one hundred forty-two million, three hundred forty-two thousand, three hundred thirteen".