2440240123 has 4 divisors (see below), whose sum is σ = 2440889640. Its totient is φ = 2439590608.

The previous prime is 2440240063. The next prime is 2440240133. The reversal of 2440240123 is 3210420442.

It is a happy number.

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 2440240123 - 2¹⁷ = 2440109051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2440240094 and 2440240103.

It is not an unprimeable number, because it can be changed into a prime (2440240133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319090 + ... + 326647.

It is an arithmetic number, because the mean of its divisors is an integer number (610222410).

Almost surely, 2^2440240123 is an apocalyptic number.

2440240123 is a deficient number, since it is larger than the sum of its proper divisors (649517).

2440240123 is an equidigital number, since it uses as much as digits as its factorization.

2440240123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649516.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 2440240123 is about 49398.7866551396. The cubic root of 2440240123 is about 1346.3072603998.

Adding to 2440240123 its reverse (3210420442), we get a palindrome (5650660565).

The spelling of 2440240123 in words is "two billion, four hundred forty million, two hundred forty thousand, one hundred twenty-three".