312168742 has 8 divisors (see below), whose sum is σ = 488612016. Its totient is φ = 149298072.

The previous prime is 312168721. The next prime is 312168743. The reversal of 312168742 is 247861213.

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

It is a junction number, because it is equal to n+sod(n) for n = 312168698 and 312168707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312168743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3393093 + ... + 3393184.

It is an arithmetic number, because the mean of its divisors is an integer number (61076502).

Almost surely, 2^312168742 is an apocalyptic number.

312168742 is a deficient number, since it is larger than the sum of its proper divisors (176443274).

312168742 is a wasteful number, since it uses less digits than its factorization.

312168742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6786302.

The product of its digits is 16128, while the sum is 34.

The square root of 312168742 is about 17668.2976542733. The cubic root of 312168742 is about 678.3645400278.

The spelling of 312168742 in words is "three hundred twelve million, one hundred sixty-eight thousand, seven hundred forty-two".