423408243 has 4 divisors (see below), whose sum is σ = 564544328. Its totient is φ = 282272160.

The previous prime is 423408191. The next prime is 423408247. The reversal of 423408243 is 342804324.

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

It is not a de Polignac number, because 423408243 - 2¹⁶ = 423342707 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 423408243.

It is not an unprimeable number, because it can be changed into a prime (423408247) 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, 70568038 + ... + 70568043.

It is an arithmetic number, because the mean of its divisors is an integer number (141136082).

Almost surely, 2^423408243 is an apocalyptic number.

423408243 is a deficient number, since it is larger than the sum of its proper divisors (141136085).

423408243 is a wasteful number, since it uses less digits than its factorization.

423408243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141136084.

The product of its (nonzero) digits is 18432, while the sum is 30.

The square root of 423408243 is about 20576.8861346901. The cubic root of 423408243 is about 750.9074899509.

The spelling of 423408243 in words is "four hundred twenty-three million, four hundred eight thousand, two hundred forty-three".