423023242 has 4 divisors (see below), whose sum is σ = 634534866. Its totient is φ = 211511620.

The previous prime is 423023231. The next prime is 423023243. The reversal of 423023242 is 242320324.

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

It can be written as a sum of positive squares in only one way, i.e., 245893761 + 177129481 = 15681^2 + 13309^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (423023243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105755809 + ... + 105755812.

Almost surely, 2^423023242 is an apocalyptic number.

423023242 is a deficient number, since it is larger than the sum of its proper divisors (211511624).

423023242 is a wasteful number, since it uses less digits than its factorization.

423023242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211511623.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 423023242 is about 20567.5288257972. The cubic root of 423023242 is about 750.6798233046.

Adding to 423023242 its reverse (242320324), we get a palindrome (665343566).

It can be divided in two parts, 4230 and 23242, that added together give a palindrome (27472).

The spelling of 423023242 in words is "four hundred twenty-three million, twenty-three thousand, two hundred forty-two".