3840123 has 16 divisors (see below), whose sum is σ = 5909760. Its totient is φ = 2172576.

The previous prime is 3840107. The next prime is 3840127. The reversal of 3840123 is 3210483.

It is a happy number.

It is not a de Polignac number, because 3840123 - 2⁴ = 3840107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 3840123.

It is not an unprimeable number, because it can be changed into a prime (3840127) 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 15 ways as a sum of consecutive naturals, for example, 1393 + ... + 3101.

It is an arithmetic number, because the mean of its divisors is an integer number (369360).

Almost surely, 2^3840123 is an apocalyptic number.

3840123 is a deficient number, since it is larger than the sum of its proper divisors (2069637).

3840123 is a wasteful number, since it uses less digits than its factorization.

3840123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1826.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 3840123 is about 1959.6231780626. The cubic root of 3840123 is about 156.5963776036.

The spelling of 3840123 in words is "three million, eight hundred forty thousand, one hundred twenty-three".