240404123 has 8 divisors (see below), whose sum is σ = 255670992. Its totient is φ = 225262336.

The previous prime is 240404077. The next prime is 240404149. The reversal of 240404123 is 321404042.

240404123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 240404123 - 2¹⁶ = 240338587 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 240404095 and 240404104.

It is not an unprimeable number, because it can be changed into a prime (240400123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27290 + ... + 35007.

It is an arithmetic number, because the mean of its divisors is an integer number (31958874).

Almost surely, 2^240404123 is an apocalyptic number.

240404123 is a deficient number, since it is larger than the sum of its proper divisors (15266869).

240404123 is a wasteful number, since it uses less digits than its factorization.

240404123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62541.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 240404123 is about 15504.9709125816. The cubic root of 240404123 is about 621.7951122954.

Adding to 240404123 its reverse (321404042), we get a palindrome (561808165).

The spelling of 240404123 in words is "two hundred forty million, four hundred four thousand, one hundred twenty-three".