312042442 has 16 divisors (see below), whose sum is σ = 475164360. Its totient is φ = 153660672.

The previous prime is 312042343. The next prime is 312042457. The reversal of 312042442 is 244240213.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 293128641 + 18913801 = 17121^2 + 4349^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149784 + ... + 151852.

Almost surely, 2^312042442 is an apocalyptic number.

312042442 is a deficient number, since it is larger than the sum of its proper divisors (163121918).

312042442 is a wasteful number, since it uses less digits than its factorization.

312042442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3177.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 312042442 is about 17664.7230943482. The cubic root of 312042442 is about 678.2730414383.

Adding to 312042442 its reverse (244240213), we get a palindrome (556282655).

The spelling of 312042442 in words is "three hundred twelve million, forty-two thousand, four hundred forty-two".