102117739 has 2 divisors, whose sum is σ = 102117740. Its totient is φ = 102117738.

The previous prime is 102117737. The next prime is 102117773. The reversal of 102117739 is 937711201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102117739 - 2¹ = 102117737 is a prime.

Together with 102117737, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 102117739.

It is not a weakly prime, because it can be changed into another prime (102117737) 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, 51058869 + 51058870.

It is an arithmetic number, because the mean of its divisors is an integer number (51058870).

Almost surely, 2^102117739 is an apocalyptic number.

102117739 is a deficient number, since it is larger than the sum of its proper divisors (1).

102117739 is an equidigital number, since it uses as much as digits as its factorization.

102117739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2646, while the sum is 31.

The square root of 102117739 is about 10105.3322063156. The cubic root of 102117739 is about 467.4125799535.

The spelling of 102117739 in words is "one hundred two million, one hundred seventeen thousand, seven hundred thirty-nine".