1120123189 has 2 divisors, whose sum is σ = 1120123190. Its totient is φ = 1120123188.

The previous prime is 1120123181. The next prime is 1120123241. The reversal of 1120123189 is 9813210211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 826275025 + 293848164 = 28745^2 + 17142^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120123189 - 2³ = 1120123181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1120123181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560061594 + 560061595.

It is an arithmetic number, because the mean of its divisors is an integer number (560061595).

Almost surely, 2^1120123189 is an apocalyptic number.

It is an amenable number.

1120123189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1120123189 is an equidigital number, since it uses as much as digits as its factorization.

1120123189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 1120123189 is about 33468.2414984714. The cubic root of 1120123189 is about 1038.5368938646.

The spelling of 1120123189 in words is "one billion, one hundred twenty million, one hundred twenty-three thousand, one hundred eighty-nine".