102090365 has 12 divisors (see below), whose sum is σ = 132658164. Its totient is φ = 75389184.

The previous prime is 102090361. The next prime is 102090367. The reversal of 102090365 is 563090201.

It can be written as a sum of positive squares in 6 ways, for example, as 10582009 + 91508356 = 3253^2 + 9566^2 .

It is not a de Polignac number, because 102090365 - 2² = 102090361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102090361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59564 + ... + 61253.

It is an arithmetic number, because the mean of its divisors is an integer number (11054847).

Almost surely, 2^102090365 is an apocalyptic number.

It is an amenable number.

102090365 is a deficient number, since it is larger than the sum of its proper divisors (30567799).

102090365 is a wasteful number, since it uses less digits than its factorization.

102090365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120848 (or 120835 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 102090365 is about 10103.9776820814. The cubic root of 102090365 is about 467.3708108624.

The spelling of 102090365 in words is "one hundred two million, ninety thousand, three hundred sixty-five".