102642282409 has 2 divisors, whose sum is σ = 102642282410. Its totient is φ = 102642282408.

The previous prime is 102642282397. The next prime is 102642282427. The reversal of 102642282409 is 904282246201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79733946384 + 22908336025 = 282372^2 + 151355^2 .

It is an emirp because it is prime and its reverse (904282246201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102642282409 is a prime.

It is not a weakly prime, because it can be changed into another prime (102642282469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51321141204 + 51321141205.

It is an arithmetic number, because the mean of its divisors is an integer number (51321141205).

Almost surely, 2^102642282409 is an apocalyptic number.

It is an amenable number.

102642282409 is a deficient number, since it is larger than the sum of its proper divisors (1).

102642282409 is an equidigital number, since it uses as much as digits as its factorization.

102642282409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 40.

The spelling of 102642282409 in words is "one hundred two billion, six hundred forty-two million, two hundred eighty-two thousand, four hundred nine".