312120142 has 8 divisors (see below), whose sum is σ = 468325656. Its totient is φ = 156011592.

The previous prime is 312120139. The next prime is 312120169. The reversal of 312120142 is 241021213.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15573 + ... + 29440.

It is an arithmetic number, because the mean of its divisors is an integer number (58540707).

Almost surely, 2^312120142 is an apocalyptic number.

312120142 is a deficient number, since it is larger than the sum of its proper divisors (156205514).

312120142 is a wasteful number, since it uses less digits than its factorization.

312120142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48482.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 312120142 is about 17666.9222560128. The cubic root of 312120142 is about 678.3293344662.

Adding to 312120142 its reverse (241021213), we get a palindrome (553141355).

The spelling of 312120142 in words is "three hundred twelve million, one hundred twenty thousand, one hundred forty-two".