2400402243 has 4 divisors (see below), whose sum is σ = 3200536328. Its totient is φ = 1600268160.

The previous prime is 2400402229. The next prime is 2400402289. The reversal of 2400402243 is 3422040042.

2400402243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2400402243 - 2²² = 2396207939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2400402203) 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, 400067038 + ... + 400067043.

It is an arithmetic number, because the mean of its divisors is an integer number (800134082).

Almost surely, 2^2400402243 is an apocalyptic number.

2400402243 is a deficient number, since it is larger than the sum of its proper divisors (800134085).

2400402243 is an equidigital number, since it uses as much as digits as its factorization.

2400402243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800134084.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 2400402243 is about 48993.9000590890. The cubic root of 2400402243 is about 1338.9406945188.

Adding to 2400402243 its reverse (3422040042), we get a palindrome (5822442285).

The spelling of 2400402243 in words is "two billion, four hundred million, four hundred two thousand, two hundred forty-three".