102743939 has 2 divisors, whose sum is σ = 102743940. Its totient is φ = 102743938.

The previous prime is 102743929. The next prime is 102743941. The reversal of 102743939 is 939347201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102743939 - 2¹⁶ = 102678403 is a prime.

It is a Sophie Germain prime.

Together with 102743941, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (102743929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51371969 + 51371970.

It is an arithmetic number, because the mean of its divisors is an integer number (51371970).

Almost surely, 2^102743939 is an apocalyptic number.

102743939 is a deficient number, since it is larger than the sum of its proper divisors (1).

102743939 is an equidigital number, since it uses as much as digits as its factorization.

102743939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 102743939 is about 10136.2684948654. The cubic root of 102743939 is about 468.3660463831.

The spelling of 102743939 in words is "one hundred two million, seven hundred forty-three thousand, nine hundred thirty-nine".