102912749 has 2 divisors, whose sum is σ = 102912750. Its totient is φ = 102912748.

The previous prime is 102912743. The next prime is 102912763. The reversal of 102912749 is 947219201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100902025 + 2010724 = 10045^2 + 1418^2 .

It is an emirp because it is prime and its reverse (947219201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102912749 - 2²⁰ = 101864173 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102912743) 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, 51456374 + 51456375.

It is an arithmetic number, because the mean of its divisors is an integer number (51456375).

Almost surely, 2^102912749 is an apocalyptic number.

It is an amenable number.

102912749 is a deficient number, since it is larger than the sum of its proper divisors (1).

102912749 is an equidigital number, since it uses as much as digits as its factorization.

102912749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 102912749 is about 10144.5921061421. The cubic root of 102912749 is about 468.6224170943.

The spelling of 102912749 in words is "one hundred two million, nine hundred twelve thousand, seven hundred forty-nine".