1313520502042 has 48 divisors (see below), whose sum is σ = 2322749088000. Its totient is φ = 555385862304.

The previous prime is 1313520502027. The next prime is 1313520502043. The reversal of 1313520502042 is 2402050253131.

It is a super-2 number, since 2×1313520502042² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1313520502042.

It is not an unprimeable number, because it can be changed into a prime (1313520502043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10147384 + ... + 10276012.

It is an arithmetic number, because the mean of its divisors is an integer number (48390606000).

Almost surely, 2^{1313520502042} is an apocalyptic number.

1313520502042 is a deficient number, since it is larger than the sum of its proper divisors (1009228585958).

1313520502042 is a wasteful number, since it uses less digits than its factorization.

1313520502042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130043 (or 130036 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 1313520502042 its reverse (2402050253131), we get a palindrome (3715570755173).

The spelling of 1313520502042 in words is "one trillion, three hundred thirteen billion, five hundred twenty million, five hundred two thousand, forty-two".