1312042 has 8 divisors (see below), whose sum is σ = 2001600. Its totient is φ = 644844.

The previous prime is 1312027. The next prime is 1312079. The reversal of 1312042 is 2402131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5442 + ... + 5677.

It is an arithmetic number, because the mean of its divisors is an integer number (250200).

2^1312042 is an apocalyptic number.

1312042 is a deficient number, since it is larger than the sum of its proper divisors (689558).

1312042 is a wasteful number, since it uses less digits than its factorization.

1312042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11180.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1312042 is about 1145.4440187106. Note that the first 3 decimals coincide. The cubic root of 1312042 is about 109.4752416520.

Adding to 1312042 its reverse (2402131), we get a palindrome (3714173).

The spelling of 1312042 in words is "one million, three hundred twelve thousand, forty-two".