102789122 has 18 divisors (see below), whose sum is σ = 157995747. Its totient is φ = 50154324.

The previous prime is 102789119. The next prime is 102789131. The reversal of 102789122 is 221987201.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 51394561 + 51394561 = 7169^2 + 7169^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=7169.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 960593 + ... + 960699.

Almost surely, 2^102789122 is an apocalyptic number.

102789122 is a deficient number, since it is larger than the sum of its proper divisors (55206625).

102789122 is an frugal number, since it uses more digits than its factorization.

102789122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 102789122 is about 10138.4970286527. The cubic root of 102789122 is about 468.4346930333.

Multiplying 102789122 by its sum of digits (32), we get a square (3289251904 = 57352²).

The spelling of 102789122 in words is "one hundred two million, seven hundred eighty-nine thousand, one hundred twenty-two".