402243243 has 32 divisors (see below), whose sum is σ = 586598400. Its totient is φ = 244290816.

The previous prime is 402243241. The next prime is 402243271. The reversal of 402243243 is 342342204.

It is not a de Polignac number, because 402243243 - 2¹ = 402243241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402243241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186630 + ... + 188772.

It is an arithmetic number, because the mean of its divisors is an integer number (18331200).

Almost surely, 2^402243243 is an apocalyptic number.

402243243 is a deficient number, since it is larger than the sum of its proper divisors (184355157).

402243243 is a wasteful number, since it uses less digits than its factorization.

402243243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2291.

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 402243243 is about 20056.0026675307. The cubic root of 402243243 is about 738.1810958989.

Adding to 402243243 its reverse (342342204), we get a palindrome (744585447).

The spelling of 402243243 in words is "four hundred two million, two hundred forty-three thousand, two hundred forty-three".