312501042 has 48 divisors (see below), whose sum is σ = 800504640. Its totient is φ = 86206176.

The previous prime is 312501041. The next prime is 312501047. The reversal of 312501042 is 240105213.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (312501041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39108 + ... + 46415.

It is an arithmetic number, because the mean of its divisors is an integer number (16677180).

Almost surely, 2^312501042 is an apocalyptic number.

312501042 is an abundant number, since it is smaller than the sum of its proper divisors (488003598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312501042 is a wasteful number, since it uses less digits than its factorization.

312501042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85567 (or 85564 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 312501042 is about 17677.6990018498. The cubic root of 312501042 is about 678.6051583941.

Adding to 312501042 its reverse (240105213), we get a palindrome (552606255).

The spelling of 312501042 in words is "three hundred twelve million, five hundred one thousand, forty-two".