1312407242 has 32 divisors (see below), whose sum is σ = 2153910528. Its totient is φ = 597217536.

The previous prime is 1312407241. The next prime is 1312407277. The reversal of 1312407242 is 2427042131.

It is not an unprimeable number, because it can be changed into a prime (1312407241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206963 + ... + 213209.

It is an arithmetic number, because the mean of its divisors is an integer number (67309704).

Almost surely, 2^1312407242 is an apocalyptic number.

1312407242 is a deficient number, since it is larger than the sum of its proper divisors (841503286).

1312407242 is a wasteful number, since it uses less digits than its factorization.

1312407242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6470.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 1312407242 is about 36227.1616608312. The cubic root of 1312407242 is about 1094.8539916382.

Adding to 1312407242 its reverse (2427042131), we get a palindrome (3739449373).

The spelling of 1312407242 in words is "one billion, three hundred twelve million, four hundred seven thousand, two hundred forty-two".