1312433242 has 4 divisors (see below), whose sum is σ = 1968649866. Its totient is φ = 656216620.

The previous prime is 1312433233. The next prime is 1312433257. The reversal of 1312433242 is 2423342131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2423342131 = 7 ⋅346191733.

It can be written as a sum of positive squares in only one way, i.e., 1071842121 + 240591121 = 32739^2 + 15511^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328108309 + ... + 328108312.

Almost surely, 2^1312433242 is an apocalyptic number.

1312433242 is a deficient number, since it is larger than the sum of its proper divisors (656216624).

1312433242 is an equidigital number, since it uses as much as digits as its factorization.

1312433242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656216623.

The product of its digits is 3456, while the sum is 25.

The square root of 1312433242 is about 36227.5205058254. The cubic root of 1312433242 is about 1094.8612216135.

Adding to 1312433242 its reverse (2423342131), we get a palindrome (3735775373).

The spelling of 1312433242 in words is "one billion, three hundred twelve million, four hundred thirty-three thousand, two hundred forty-two".