123159385 has 4 divisors (see below), whose sum is σ = 147791268. Its totient is φ = 98527504.

The previous prime is 123159383. The next prime is 123159403. The reversal of 123159385 is 583951321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 583951321 = 4637 ⋅125933.

It can be written as a sum of positive squares in 2 ways, for example, as 21492496 + 101666889 = 4636^2 + 10083^2 .

It is a cyclic number.

It is not a de Polignac number, because 123159385 - 2¹ = 123159383 is a prime.

It is a super-2 number, since 2×123159385² = 30336468227156450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123159383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12315934 + ... + 12315943.

It is an arithmetic number, because the mean of its divisors is an integer number (36947817).

Almost surely, 2^123159385 is an apocalyptic number.

It is an amenable number.

123159385 is a deficient number, since it is larger than the sum of its proper divisors (24631883).

123159385 is an equidigital number, since it uses as much as digits as its factorization.

123159385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24631882.

The product of its digits is 32400, while the sum is 37.

The square root of 123159385 is about 11097.7198108440. The cubic root of 123159385 is about 497.5337014113.

The spelling of 123159385 in words is "one hundred twenty-three million, one hundred fifty-nine thousand, three hundred eighty-five".