642116113 has 8 divisors (see below), whose sum is σ = 663330560. Its totient is φ = 620933040.

The previous prime is 642116107. The next prime is 642116131. The reversal of 642116113 is 311611246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 642116113 - 2²⁹ = 105245201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (642116183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38131 + ... + 52327.

It is an arithmetic number, because the mean of its divisors is an integer number (82916320).

Almost surely, 2^642116113 is an apocalyptic number.

It is an amenable number.

642116113 is a deficient number, since it is larger than the sum of its proper divisors (21214447).

642116113 is a wasteful number, since it uses less digits than its factorization.

642116113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15687.

The product of its digits is 864, while the sum is 25.

The square root of 642116113 is about 25340.0101223342. The cubic root of 642116113 is about 862.7226284645.

Adding to 642116113 its reverse (311611246), we get a palindrome (953727359).

The spelling of 642116113 in words is "six hundred forty-two million, one hundred sixteen thousand, one hundred thirteen".