102120589 has 4 divisors (see below), whose sum is σ = 102173724. Its totient is φ = 102067456.

The previous prime is 102120553. The next prime is 102120607. The reversal of 102120589 is 985021201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45118089 + 57002500 = 6717^2 + 7550^2 .

It is a cyclic number.

It is not a de Polignac number, because 102120589 - 2⁹ = 102120077 is a prime.

It is a super-2 number, since 2×102120589² = 20857229395413842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102120509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23572 + ... + 27565.

It is an arithmetic number, because the mean of its divisors is an integer number (25543431).

Almost surely, 2^102120589 is an apocalyptic number.

It is an amenable number.

102120589 is a deficient number, since it is larger than the sum of its proper divisors (53135).

102120589 is an equidigital number, since it uses as much as digits as its factorization.

102120589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53134.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 102120589 is about 10105.4732199932. The cubic root of 102120589 is about 467.4169282462.

The spelling of 102120589 in words is "one hundred two million, one hundred twenty thousand, five hundred eighty-nine".