4013123 has 4 divisors (see below), whose sum is σ = 4224360. Its totient is φ = 3801888.

The previous prime is 4013111. The next prime is 4013153. The reversal of 4013123 is 3213104.

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 4013123 - 2⁶ = 4013059 is a prime.

It is a super-2 number, since 2×4013123² = 32210312426258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4013098 and 4013107.

It is not an unprimeable number, because it can be changed into a prime (4013153) 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, 105590 + ... + 105627.

It is an arithmetic number, because the mean of its divisors is an integer number (1056090).

Almost surely, 2^4013123 is an apocalyptic number.

4013123 is a deficient number, since it is larger than the sum of its proper divisors (211237).

4013123 is a wasteful number, since it uses less digits than its factorization.

4013123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211236.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 4013123 is about 2003.2780635748. The cubic root of 4013123 is about 158.9135112343.

Adding to 4013123 its reverse (3213104), we get a palindrome (7226227).

The spelling of 4013123 in words is "four million, thirteen thousand, one hundred twenty-three".