30542120013 has 4 divisors (see below), whose sum is σ = 40722826688. Its totient is φ = 20361413340.

The previous prime is 30542119961. The next prime is 30542120033. The reversal of 30542120013 is 31002124503.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 30542120013 - 2¹² = 30542115917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30542120033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5090353333 + ... + 5090353338.

It is an arithmetic number, because the mean of its divisors is an integer number (10180706672).

Almost surely, 2^30542120013 is an apocalyptic number.

It is an amenable number.

30542120013 is a deficient number, since it is larger than the sum of its proper divisors (10180706675).

30542120013 is a wasteful number, since it uses less digits than its factorization.

30542120013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10180706674.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 30542120013 its reverse (31002124503), we get a palindrome (61544244516).

The spelling of 30542120013 in words is "thirty billion, five hundred forty-two million, one hundred twenty thousand, thirteen".