2400343 has 4 divisors (see below), whose sum is σ = 2618568. Its totient is φ = 2182120.

The previous prime is 2400329. The next prime is 2400347. The reversal of 2400343 is 3430042.

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 2400343 - 2⁵ = 2400311 is a prime.

It is a Duffinian number.

2400343 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2400347) 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, 109096 + ... + 109117.

It is an arithmetic number, because the mean of its divisors is an integer number (654642).

2^2400343 is an apocalyptic number.

2400343 is a deficient number, since it is larger than the sum of its proper divisors (218225).

2400343 is a wasteful number, since it uses less digits than its factorization.

2400343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218224.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 2400343 is about 1549.3040373019. The cubic root of 2400343 is about 133.8929679210.

Adding to 2400343 its reverse (3430042), we get a palindrome (5830385).

The spelling of 2400343 in words is "two million, four hundred thousand, three hundred forty-three".