102090787 has 2 divisors, whose sum is σ = 102090788. Its totient is φ = 102090786.

The previous prime is 102090749. The next prime is 102090799. The reversal of 102090787 is 787090201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102090787 is a prime.

It is not a weakly prime, because it can be changed into another prime (102090727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51045393 + 51045394.

It is an arithmetic number, because the mean of its divisors is an integer number (51045394).

Almost surely, 2^102090787 is an apocalyptic number.

102090787 is a deficient number, since it is larger than the sum of its proper divisors (1).

102090787 is an equidigital number, since it uses as much as digits as its factorization.

102090787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 102090787 is about 10103.9985649247. The cubic root of 102090787 is about 467.3714548351.

The spelling of 102090787 in words is "one hundred two million, ninety thousand, seven hundred eighty-seven".