102402589 has 2 divisors, whose sum is σ = 102402590. Its totient is φ = 102402588.

The previous prime is 102402581. The next prime is 102402607. The reversal of 102402589 is 985204201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74132100 + 28270489 = 8610^2 + 5317^2 .

It is an emirp because it is prime and its reverse (985204201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102402589 - 2³ = 102402581 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102402589.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102402581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51201294 + 51201295.

It is an arithmetic number, because the mean of its divisors is an integer number (51201295).

Almost surely, 2^102402589 is an apocalyptic number.

It is an amenable number.

102402589 is a deficient number, since it is larger than the sum of its proper divisors (1).

102402589 is an equidigital number, since it uses as much as digits as its factorization.

102402589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 102402589 is about 10119.4164357437. The cubic root of 102402589 is about 467.8467809360.

The spelling of 102402589 in words is "one hundred two million, four hundred two thousand, five hundred eighty-nine".