402243343 has 16 divisors (see below), whose sum is σ = 431907840. Its totient is φ = 373719456.

The previous prime is 402243323. The next prime is 402243379. The reversal of 402243343 is 343342204.

It is not a de Polignac number, because 402243343 - 2²¹ = 400146191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402243323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148921 + ... + 151597.

It is an arithmetic number, because the mean of its divisors is an integer number (26994240).

Almost surely, 2^402243343 is an apocalyptic number.

402243343 is a deficient number, since it is larger than the sum of its proper divisors (29664497).

402243343 is a wasteful number, since it uses less digits than its factorization.

402243343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2886.

The product of its (nonzero) digits is 6912, while the sum is 25.

The square root of 402243343 is about 20056.0051605498. The cubic root of 402243343 is about 738.1811570710.

Adding to 402243343 its reverse (343342204), we get a palindrome (745585547).

The spelling of 402243343 in words is "four hundred two million, two hundred forty-three thousand, three hundred forty-three".