423240241 has 4 divisors (see below), whose sum is σ = 436893184. Its totient is φ = 409587300.

The previous prime is 423240221. The next prime is 423240247. The reversal of 423240241 is 142042324.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423240241 is a prime.

It is a Duffinian number.

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, 6826425 + ... + 6826486.

It is an arithmetic number, because the mean of its divisors is an integer number (109223296).

Almost surely, 2^423240241 is an apocalyptic number.

It is an amenable number.

423240241 is a deficient number, since it is larger than the sum of its proper divisors (13652943).

423240241 is a wasteful number, since it uses less digits than its factorization.

423240241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13652942.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 423240241 is about 20572.8034307432. The cubic root of 423240241 is about 750.8081605596.

Adding to 423240241 its reverse (142042324), we get a palindrome (565282565).

The spelling of 423240241 in words is "four hundred twenty-three million, two hundred forty thousand, two hundred forty-one".