102394139 has 2 divisors, whose sum is σ = 102394140. Its totient is φ = 102394138.

The previous prime is 102394129. The next prime is 102394151. The reversal of 102394139 is 931493201.

It is a weak prime.

It is an emirp because it is prime and its reverse (931493201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102394139 - 2⁸ = 102393883 is a prime.

It is a super-3 number, since 3×102394139³ (a number of 25 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (102394109) 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 as a sum of consecutive naturals, namely, 51197069 + 51197070.

It is an arithmetic number, because the mean of its divisors is an integer number (51197070).

Almost surely, 2^102394139 is an apocalyptic number.

102394139 is a deficient number, since it is larger than the sum of its proper divisors (1).

102394139 is an equidigital number, since it uses as much as digits as its factorization.

102394139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 102394139 is about 10118.9989129360. The cubic root of 102394139 is about 467.8339120750.

The spelling of 102394139 in words is "one hundred two million, three hundred ninety-four thousand, one hundred thirty-nine".