102140245457 has 2 divisors, whose sum is σ = 102140245458. Its totient is φ = 102140245456.

The previous prime is 102140245411. The next prime is 102140245463. The reversal of 102140245457 is 754542041201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76074465856 + 26065779601 = 275816^2 + 161449^2 .

It is a cyclic number.

It is not a de Polignac number, because 102140245457 - 2²⁴ = 102123468241 is a prime.

It is not a weakly prime, because it can be changed into another prime (102140245477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51070122728 + 51070122729.

It is an arithmetic number, because the mean of its divisors is an integer number (51070122729).

Almost surely, 2^102140245457 is an apocalyptic number.

It is an amenable number.

102140245457 is a deficient number, since it is larger than the sum of its proper divisors (1).

102140245457 is an equidigital number, since it uses as much as digits as its factorization.

102140245457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44800, while the sum is 35.

Adding to 102140245457 its reverse (754542041201), we get a palindrome (856682286658).

The spelling of 102140245457 in words is "one hundred two billion, one hundred forty million, two hundred forty-five thousand, four hundred fifty-seven".