40123223 has 4 divisors (see below), whose sum is σ = 45855120. Its totient is φ = 34391328.

The previous prime is 40123219. The next prime is 40123241. The reversal of 40123223 is 32232104.

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 40123223 - 2² = 40123219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40123243) 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, 2865938 + ... + 2865951.

It is an arithmetic number, because the mean of its divisors is an integer number (11463780).

Almost surely, 2^40123223 is an apocalyptic number.

40123223 is a deficient number, since it is larger than the sum of its proper divisors (5731897).

40123223 is an equidigital number, since it uses as much as digits as its factorization.

40123223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5731896.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 40123223 is about 6334.2894629153. The cubic root of 40123223 is about 342.3460099486.

Adding to 40123223 its reverse (32232104), we get a palindrome (72355327).

The spelling of 40123223 in words is "forty million, one hundred twenty-three thousand, two hundred twenty-three".