402330243 has 16 divisors (see below), whose sum is σ = 622227200. Its totient is φ = 226470816.

The previous prime is 402330161. The next prime is 402330251. The reversal of 402330243 is 342033204.

It is a de Polignac number, because none of the positive numbers 2^k-402330243 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (402330043) 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, 141568 + ... + 144381.

It is an arithmetic number, because the mean of its divisors is an integer number (38889200).

Almost surely, 2^402330243 is an apocalyptic number.

402330243 is a deficient number, since it is larger than the sum of its proper divisors (219896957).

402330243 is a wasteful number, since it uses less digits than its factorization.

402330243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286026.

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 402330243 is about 20058.1714769816. The cubic root of 402330243 is about 738.2343117303.

Adding to 402330243 its reverse (342033204), we get a palindrome (744363447).

The spelling of 402330243 in words is "four hundred two million, three hundred thirty thousand, two hundred forty-three".