1312165442 has 16 divisors (see below), whose sum is σ = 2256109440. Its totient is φ = 560685888.

The previous prime is 1312165429. The next prime is 1312165471. The reversal of 1312165442 is 2445612131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134342 + ... + 143777.

It is an arithmetic number, because the mean of its divisors is an integer number (141006840).

Almost surely, 2^1312165442 is an apocalyptic number.

1312165442 is a deficient number, since it is larger than the sum of its proper divisors (943943998).

1312165442 is a wasteful number, since it uses less digits than its factorization.

1312165442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278465.

The product of its digits is 5760, while the sum is 29.

The square root of 1312165442 is about 36223.8242321266. The cubic root of 1312165442 is about 1094.7867482941.

Adding to 1312165442 its reverse (2445612131), we get a palindrome (3757777573).

The spelling of 1312165442 in words is "one billion, three hundred twelve million, one hundred sixty-five thousand, four hundred forty-two".