102490811 has 2 divisors, whose sum is σ = 102490812. Its totient is φ = 102490810.

The previous prime is 102490789. The next prime is 102490813. The reversal of 102490811 is 118094201.

It is a strong prime.

It is an emirp because it is prime and its reverse (118094201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102490811 - 2²² = 98296507 is a prime.

Together with 102490813, 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 (102490813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51245405 + 51245406.

It is an arithmetic number, because the mean of its divisors is an integer number (51245406).

Almost surely, 2^102490811 is an apocalyptic number.

102490811 is a deficient number, since it is larger than the sum of its proper divisors (1).

102490811 is an equidigital number, since it uses as much as digits as its factorization.

102490811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 102490811 is about 10123.7745431237. The cubic root of 102490811 is about 467.9810956764.

It can be divided in two parts, 102490 and 811, that added together give a palindrome (103301).

The spelling of 102490811 in words is "one hundred two million, four hundred ninety thousand, eight hundred eleven".