13030556842 has 4 divisors (see below), whose sum is σ = 19545835266. Its totient is φ = 6515278420.

The previous prime is 13030556821. The next prime is 13030556843. The reversal of 13030556842 is 24865503031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10053872361 + 2976684481 = 100269^2 + 54559^2 .

It is a super-2 number, since 2×13030556842² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13030556843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3257639209 + ... + 3257639212.

Almost surely, 2^13030556842 is an apocalyptic number.

13030556842 is a deficient number, since it is larger than the sum of its proper divisors (6515278424).

13030556842 is an equidigital number, since it uses as much as digits as its factorization.

13030556842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6515278423.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 13030556842 in words is "thirteen billion, thirty million, five hundred fifty-six thousand, eight hundred forty-two".