120626289 has 27 divisors (see below), whose sum is σ = 203073273. Its totient is φ = 68797512.

The previous prime is 120626279. The next prime is 120626321. The reversal of 120626289 is 982626021.

It is a happy number.

The square root of 120626289 is 10983.

It is a perfect power (a square), and thus also a powerful number.

120626289 is a `hidden beast` number, since 1 + 2 + 0 + 626 + 28 + 9 = 666.

It is not a de Polignac number, because 120626289 - 2⁷ = 120626161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120626249) 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 26 ways as a sum of consecutive naturals, for example, 230382 + ... + 230904.

Almost surely, 2^120626289 is an apocalyptic number.

120626289 is the 10983-rd square number.

120626289 is the 5492-nd centered octagonal number.

It is an amenable number.

120626289 is a deficient number, since it is larger than the sum of its proper divisors (82446984).

120626289 is an frugal number, since it uses more digits than its factorization.

120626289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The cubic root of 120626289 is about 494.0990160867.

Multiplying 120626289 by its sum of digits (36), we get a square (4342546404 = 65898²).

Multiplying 120626289 by its product of nonzero digits (20736), we get a square (2501306728704 = 1581552²).

It can be divided in two parts, 1206 and 26289, that added together give a triangular number (27495 = T₂₃₄).

The spelling of 120626289 in words is "one hundred twenty million, six hundred twenty-six thousand, two hundred eighty-nine".