1312520242 has 8 divisors (see below), whose sum is σ = 2147760432. Its totient is φ = 596600100.

The previous prime is 1312520227. The next prime is 1312520257. The reversal of 1312520242 is 2420252131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1312520227) and next prime (1312520257).

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 59660011 = 1312520242 / (1 + 3 + 1 + 2 + 5 + 2 + 0 + 2 + 4 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29829984 + ... + 29830027.

It is an arithmetic number, because the mean of its divisors is an integer number (268470054).

Almost surely, 2^1312520242 is an apocalyptic number.

1312520242 is a deficient number, since it is larger than the sum of its proper divisors (835240190).

1312520242 is a wasteful number, since it uses less digits than its factorization.

1312520242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59660024.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1312520242 is about 36228.7212305375. The cubic root of 1312520242 is about 1094.8854135288.

Adding to 1312520242 its reverse (2420252131), we get a palindrome (3732772373).

The spelling of 1312520242 in words is "one billion, three hundred twelve million, five hundred twenty thousand, two hundred forty-two".