102042985637 has 2 divisors, whose sum is σ = 102042985638. Its totient is φ = 102042985636.

The previous prime is 102042985633. The next prime is 102042985651. The reversal of 102042985637 is 736589240201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63971561476 + 38071424161 = 252926^2 + 195119^2 .

It is a cyclic number.

It is not a de Polignac number, because 102042985637 - 2² = 102042985633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102042985591 and 102042985600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102042985631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51021492818 + 51021492819.

It is an arithmetic number, because the mean of its divisors is an integer number (51021492819).

It is a 1-persistent number, because it is pandigital, but 2⋅102042985637 = 204085971274 is not.

Almost surely, 2^102042985637 is an apocalyptic number.

It is an amenable number.

102042985637 is a deficient number, since it is larger than the sum of its proper divisors (1).

102042985637 is an equidigital number, since it uses as much as digits as its factorization.

102042985637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 102042985637 in words is "one hundred two billion, forty-two million, nine hundred eighty-five thousand, six hundred thirty-seven".