423240242 has 8 divisors (see below), whose sum is σ = 640685100. Its totient is φ = 209678544.

The previous prime is 423240221. The next prime is 423240247. The reversal of 423240242 is 242042324.

It can be written as a sum of positive squares in 2 ways, for example, as 420619081 + 2621161 = 20509^2 + 1619^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (423240247) 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, 970517 + ... + 970952.

Almost surely, 2^423240242 is an apocalyptic number.

423240242 is a deficient number, since it is larger than the sum of its proper divisors (217444858).

423240242 is a wasteful number, since it uses less digits than its factorization.

423240242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941580.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 423240242 is about 20572.8034550472. The cubic root of 423240242 is about 750.8081611509.

Adding to 423240242 its reverse (242042324), we get a palindrome (665282566).

The spelling of 423240242 in words is "four hundred twenty-three million, two hundred forty thousand, two hundred forty-two".