142311215 has 4 divisors (see below), whose sum is σ = 170773464. Its totient is φ = 113848968.

The previous prime is 142311203. The next prime is 142311259. The reversal of 142311215 is 512113241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512113241 = 421 ⋅1216421.

It is a cyclic number.

It is not a de Polignac number, because 142311215 - 2⁶ = 142311151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14231117 + ... + 14231126.

It is an arithmetic number, because the mean of its divisors is an integer number (42693366).

Almost surely, 2^142311215 is an apocalyptic number.

142311215 is a deficient number, since it is larger than the sum of its proper divisors (28462249).

142311215 is an equidigital number, since it uses as much as digits as its factorization.

142311215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28462248.

The product of its digits is 240, while the sum is 20.

The square root of 142311215 is about 11929.4264321467. The cubic root of 142311215 is about 522.0912028759.

Adding to 142311215 its reverse (512113241), we get a palindrome (654424456).

The spelling of 142311215 in words is "one hundred forty-two million, three hundred eleven thousand, two hundred fifteen".