642116130 has 32 divisors (see below), whose sum is σ = 1582732224. Its totient is φ = 166602816.

The previous prime is 642116107. The next prime is 642116131. The reversal of 642116130 is 31611246.

It is a self number, because there is not a number n which added to its sum of digits gives 642116130.

It is not an unprimeable number, because it can be changed into a prime (642116131) 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 15 ways as a sum of consecutive naturals, for example, 288132 + ... + 290351.

It is an arithmetic number, because the mean of its divisors is an integer number (49460382).

Almost surely, 2^642116130 is an apocalyptic number.

642116130 is an abundant number, since it is smaller than the sum of its proper divisors (940616094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

642116130 is a wasteful number, since it uses less digits than its factorization.

642116130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578530.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 642116130 is about 25340.0104577721. The cubic root of 642116130 is about 862.7226360780.

Adding to 642116130 its reverse (31611246), we get a palindrome (673727376).

It can be divided in two parts, 642116 and 130, that added together give a palindrome (642246).

The spelling of 642116130 in words is "six hundred forty-two million, one hundred sixteen thousand, one hundred thirty".