102122939 has 2 divisors, whose sum is σ = 102122940. Its totient is φ = 102122938.

The previous prime is 102122899. The next prime is 102122953. The reversal of 102122939 is 939221201.

It is a strong prime.

It is an emirp because it is prime and its reverse (939221201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102122939 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (102122039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51061469 + 51061470.

It is an arithmetic number, because the mean of its divisors is an integer number (51061470).

Almost surely, 2^102122939 is an apocalyptic number.

102122939 is a deficient number, since it is larger than the sum of its proper divisors (1).

102122939 is an equidigital number, since it uses as much as digits as its factorization.

102122939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 102122939 is about 10105.5894929489. The cubic root of 102122939 is about 467.4205136197.

The spelling of 102122939 in words is "one hundred two million, one hundred twenty-two thousand, nine hundred thirty-nine".