312505346042 has 4 divisors (see below), whose sum is σ = 468758019066. Its totient is φ = 156252673020.

The previous prime is 312505346017. The next prime is 312505346053. The reversal of 312505346042 is 240643505213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 157268558041 + 155236788001 = 396571^2 + 394001^2 .

It is a junction number, because it is equal to n+sod(n) for n = 312505345993 and 312505346011.

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 as a sum of consecutive naturals, namely, 78126336509 + ... + 78126336512.

Almost surely, 2^312505346042 is an apocalyptic number.

312505346042 is a deficient number, since it is larger than the sum of its proper divisors (156252673024).

312505346042 is a wasteful number, since it uses less digits than its factorization.

312505346042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156252673023.

The product of its (nonzero) digits is 86400, while the sum is 35.

The spelling of 312505346042 in words is "three hundred twelve billion, five hundred five million, three hundred forty-six thousand, forty-two".