4240123 has 4 divisors (see below), whose sum is σ = 4489560. Its totient is φ = 3990688.

The previous prime is 4240111. The next prime is 4240127. The reversal of 4240123 is 3210424.

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 4240123 - 2⁵ = 4240091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4240097 and 4240106.

It is not an unprimeable number, because it can be changed into a prime (4240127) 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, 124693 + ... + 124726.

It is an arithmetic number, because the mean of its divisors is an integer number (1122390).

Almost surely, 2^4240123 is an apocalyptic number.

4240123 is a deficient number, since it is larger than the sum of its proper divisors (249437).

4240123 is a wasteful number, since it uses less digits than its factorization.

4240123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249436.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 4240123 is about 2059.1558950211. The cubic root of 4240123 is about 161.8550117685.

Adding to 4240123 its reverse (3210424), we get a palindrome (7450547).

It can be divided in two parts, 42401 and 23, that added together give a palindrome (42424).

The spelling of 4240123 in words is "four million, two hundred forty thousand, one hundred twenty-three".