100242309989 has 2 divisors, whose sum is σ = 100242309990. Its totient is φ = 100242309988.

The previous prime is 100242309983. The next prime is 100242310009. The reversal of 100242309989 is 989903242001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92892677089 + 7349632900 = 304783^2 + 85730^2 .

It is an emirp because it is prime and its reverse (989903242001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100242309989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100242309983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50121154994 + 50121154995.

It is an arithmetic number, because the mean of its divisors is an integer number (50121154995).

Almost surely, 2^100242309989 is an apocalyptic number.

It is an amenable number.

100242309989 is a deficient number, since it is larger than the sum of its proper divisors (1).

100242309989 is an equidigital number, since it uses as much as digits as its factorization.

100242309989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 47.

The spelling of 100242309989 in words is "one hundred billion, two hundred forty-two million, three hundred nine thousand, nine hundred eighty-nine".