3918123 has 24 divisors (see below), whose sum is σ = 6502080. Its totient is φ = 2248560.

The previous prime is 3918071. The next prime is 3918127. The reversal of 3918123 is 3218193.

It is not a de Polignac number, because 3918123 - 2²⁰ = 2869547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3918127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 840 + ... + 2922.

It is an arithmetic number, because the mean of its divisors is an integer number (270920).

Almost surely, 2^3918123 is an apocalyptic number.

3918123 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

3918123 is a deficient number, since it is larger than the sum of its proper divisors (2583957).

3918123 is a wasteful number, since it uses less digits than its factorization.

3918123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2119 (or 2116 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 3918123 is about 1979.4249164846. The cubic root of 3918123 is about 157.6495329672.

It can be divided in two parts, 39181 and 23, that added together give a square (39204 = 198²).

The spelling of 3918123 in words is "three million, nine hundred eighteen thousand, one hundred twenty-three".