312442142 has 4 divisors (see below), whose sum is σ = 468663216. Its totient is φ = 156221070.

The previous prime is 312442093. The next prime is 312442153. The reversal of 312442142 is 241244213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241244213 = 7 ⋅34463459.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78110534 + ... + 78110537.

It is an arithmetic number, because the mean of its divisors is an integer number (117165804).

Almost surely, 2^312442142 is an apocalyptic number.

312442142 is a deficient number, since it is larger than the sum of its proper divisors (156221074).

312442142 is a wasteful number, since it uses less digits than its factorization.

312442142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156221073.

The product of its digits is 1536, while the sum is 23.

The square root of 312442142 is about 17676.0329825445. The cubic root of 312442142 is about 678.5625213573.

Adding to 312442142 its reverse (241244213), we get a palindrome (553686355).

The spelling of 312442142 in words is "three hundred twelve million, four hundred forty-two thousand, one hundred forty-two".