2400013123 has 4 divisors (see below), whose sum is σ = 2451077280. Its totient is φ = 2348948968.

The previous prime is 2400013069. The next prime is 2400013153. The reversal of 2400013123 is 3213100042.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2400013123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2400013097 and 2400013106.

It is not an unprimeable number, because it can be changed into a prime (2400013153) 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, 25532008 + ... + 25532101.

It is an arithmetic number, because the mean of its divisors is an integer number (612769320).

Almost surely, 2^2400013123 is an apocalyptic number.

2400013123 is a deficient number, since it is larger than the sum of its proper divisors (51064157).

2400013123 is an equidigital number, since it uses as much as digits as its factorization.

2400013123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51064156.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2400013123 is about 48989.9287915384. The cubic root of 2400013123 is about 1338.8683404289.

Adding to 2400013123 its reverse (3213100042), we get a palindrome (5613113165).

The spelling of 2400013123 in words is "two billion, four hundred million, thirteen thousand, one hundred twenty-three".