123845817 has 16 divisors (see below), whose sum is σ = 167703872. Its totient is φ = 81285120.

The previous prime is 123845801. The next prime is 123845849. The reversal of 123845817 is 718548321.

It is not a de Polignac number, because 123845817 - 2⁴ = 123845801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123845417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60393 + ... + 62409.

It is an arithmetic number, because the mean of its divisors is an integer number (10481492).

Almost surely, 2^123845817 is an apocalyptic number.

It is an amenable number.

123845817 is a deficient number, since it is larger than the sum of its proper divisors (43858055).

123845817 is a wasteful number, since it uses less digits than its factorization.

123845817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2328.

The product of its digits is 53760, while the sum is 39.

The square root of 123845817 is about 11128.6035512098. The cubic root of 123845817 is about 498.4563283939.

The spelling of 123845817 in words is "one hundred twenty-three million, eight hundred forty-five thousand, eight hundred seventeen".