123039743 has 4 divisors (see below), whose sum is σ = 123087528. Its totient is φ = 122991960.

The previous prime is 123039737. The next prime is 123039773. The reversal of 123039743 is 347930321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123039743 - 2¹⁰ = 123038719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123039733) 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, 19796 + ... + 25257.

It is an arithmetic number, because the mean of its divisors is an integer number (30771882).

Almost surely, 2^123039743 is an apocalyptic number.

123039743 is a deficient number, since it is larger than the sum of its proper divisors (47785).

123039743 is an equidigital number, since it uses as much as digits as its factorization.

123039743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47784.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 123039743 is about 11092.3281145123. The cubic root of 123039743 is about 497.3725411045.

The spelling of 123039743 in words is "one hundred twenty-three million, thirty-nine thousand, seven hundred forty-three".