312421342442 has 32 divisors (see below), whose sum is σ = 555937525440. Its totient is φ = 130043854080.

The previous prime is 312421342379. The next prime is 312421342481. The reversal of 312421342442 is 244243124213.

It is a happy number.

It is a super-2 number, since 2×312421342442² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312421342399 and 312421342408.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11274692 + ... + 11302367.

It is an arithmetic number, because the mean of its divisors is an integer number (17373047670).

Almost surely, 2^312421342442 is an apocalyptic number.

312421342442 is a deficient number, since it is larger than the sum of its proper divisors (243516182998).

312421342442 is a wasteful number, since it uses less digits than its factorization.

312421342442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22577126.

The product of its digits is 36864, while the sum is 32.

Adding to 312421342442 its reverse (244243124213), we get a palindrome (556664466655).

The spelling of 312421342442 in words is "three hundred twelve billion, four hundred twenty-one million, three hundred forty-two thousand, four hundred forty-two".