312642242 has 32 divisors (see below), whose sum is σ = 522111744. Its totient is φ = 139219600.

The previous prime is 312642233. The next prime is 312642247. The reversal of 312642242 is 242246213.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (312642247) 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 15 ways as a sum of consecutive naturals, for example, 238553 + ... + 239859.

It is an arithmetic number, because the mean of its divisors is an integer number (16315992).

Almost surely, 2^312642242 is an apocalyptic number.

312642242 is a deficient number, since it is larger than the sum of its proper divisors (209469502).

312642242 is a wasteful number, since it uses less digits than its factorization.

312642242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534.

The product of its digits is 4608, while the sum is 26.

The square root of 312642242 is about 17681.6922832629. The cubic root of 312642242 is about 678.7073496484.

Adding to 312642242 its reverse (242246213), we get a palindrome (554888455).

The spelling of 312642242 in words is "three hundred twelve million, six hundred forty-two thousand, two hundred forty-two".