123053789 has 4 divisors (see below), whose sum is σ = 123082524. Its totient is φ = 123025056.

The previous prime is 123053779. The next prime is 123053807. The reversal of 123053789 is 987350321.

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 101505625 + 21548164 = 10075^2 + 4642^2 .

It is a cyclic number.

It is not a de Polignac number, because 123053789 - 2⁴ = 123053773 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 (123053779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6512 + ... + 16985.

It is an arithmetic number, because the mean of its divisors is an integer number (30770631).

Almost surely, 2^123053789 is an apocalyptic number.

It is an amenable number.

123053789 is a deficient number, since it is larger than the sum of its proper divisors (28735).

123053789 is an equidigital number, since it uses as much as digits as its factorization.

123053789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28734.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 123053789 is about 11092.9612367483. The cubic root of 123053789 is about 497.3914667750.

The spelling of 123053789 in words is "one hundred twenty-three million, fifty-three thousand, seven hundred eighty-nine".