42120554113 has 6 divisors (see below), whose sum is σ = 46297799282. Its totient is φ = 38291412720.

The previous prime is 42120554087. The next prime is 42120554131. The reversal of 42120554113 is 31145502124.

It can be written as a sum of positive squares in only one way, i.e., 40132910224 + 1987643889 = 200332^2 + 44583^2 .

It is not a de Polignac number, because 42120554113 - 2²⁹ = 41583683201 is a prime.

It is a super-2 number, since 2×42120554113² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42120554813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 174051756 + ... + 174051997.

Almost surely, 2^42120554113 is an apocalyptic number.

It is an amenable number.

42120554113 is a deficient number, since it is larger than the sum of its proper divisors (4177245169).

42120554113 is a wasteful number, since it uses less digits than its factorization.

42120554113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348103775 (or 348103764 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The spelling of 42120554113 in words is "forty-two billion, one hundred twenty million, five hundred fifty-four thousand, one hundred thirteen".