130520042 has 4 divisors (see below), whose sum is σ = 195780066. Its totient is φ = 65260020.

The previous prime is 130520029. The next prime is 130520077. The reversal of 130520042 is 240025031.

130520042 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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., 75151561 + 55368481 = 8669^2 + 7441^2 .

It is a super-3 number, since 3×130520042³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 130520042.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32630009 + ... + 32630012.

Almost surely, 2^130520042 is an apocalyptic number.

130520042 is a deficient number, since it is larger than the sum of its proper divisors (65260024).

130520042 is an equidigital number, since it uses as much as digits as its factorization.

130520042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65260023.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 130520042 is about 11424.5368396272. The cubic root of 130520042 is about 507.2542973322.

Adding to 130520042 its reverse (240025031), we get a palindrome (370545073).

The spelling of 130520042 in words is "one hundred thirty million, five hundred twenty thousand, forty-two".