4123885 has 4 divisors (see below), whose sum is σ = 4948668. Its totient is φ = 3299104.

The previous prime is 4123871. The next prime is 4123891. The reversal of 4123885 is 5883214.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5883214 = 2 ⋅2941607.

It can be written as a sum of positive squares in 2 ways, for example, as 1075369 + 3048516 = 1037^2 + 1746^2 .

It is a cyclic number.

It is not a de Polignac number, because 4123885 - 2²¹ = 2026733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412384 + ... + 412393.

It is an arithmetic number, because the mean of its divisors is an integer number (1237167).

Almost surely, 2^4123885 is an apocalyptic number.

It is an amenable number.

4123885 is a deficient number, since it is larger than the sum of its proper divisors (824783).

4123885 is an equidigital number, since it uses as much as digits as its factorization.

4123885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824782.

The product of its digits is 7680, while the sum is 31.

The square root of 4123885 is about 2030.7350885825. The cubic root of 4123885 is about 160.3622650935.

The spelling of 4123885 in words is "four million, one hundred twenty-three thousand, eight hundred eighty-five".