4012123 has 4 divisors (see below), whose sum is σ = 4039200. Its totient is φ = 3985048.

The previous prime is 4012111. The next prime is 4012133. The reversal of 4012123 is 3212104.

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 4012123 - 2²¹ = 1914971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4012103) 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 3 ways as a sum of consecutive naturals, for example, 13315 + ... + 13612.

It is an arithmetic number, because the mean of its divisors is an integer number (1009800).

Almost surely, 2^4012123 is an apocalyptic number.

4012123 is a deficient number, since it is larger than the sum of its proper divisors (27077).

4012123 is a wasteful number, since it uses less digits than its factorization.

4012123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27076.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 4012123 is about 2003.0284571119. The cubic root of 4012123 is about 158.9003106494.

Adding to 4012123 its reverse (3212104), we get a palindrome (7224227).

The spelling of 4012123 in words is "four million, twelve thousand, one hundred twenty-three".