102740291 has 2 divisors, whose sum is σ = 102740292. Its totient is φ = 102740290.

The previous prime is 102740263. The next prime is 102740303. The reversal of 102740291 is 192047201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102740291 - 2²² = 98545987 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102740291.

It is not a weakly prime, because it can be changed into another prime (102740221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51370145 + 51370146.

It is an arithmetic number, because the mean of its divisors is an integer number (51370146).

Almost surely, 2^102740291 is an apocalyptic number.

102740291 is a deficient number, since it is larger than the sum of its proper divisors (1).

102740291 is an equidigital number, since it uses as much as digits as its factorization.

102740291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 102740291 is about 10136.0885453907. The cubic root of 102740291 is about 468.3605030892.

Adding to 102740291 its reverse (192047201), we get a palindrome (294787492).

The spelling of 102740291 in words is "one hundred two million, seven hundred forty thousand, two hundred ninety-one".