1240244423 has 8 divisors (see below), whose sum is σ = 1362871440. Its totient is φ = 1119263680.

The previous prime is 1240244417. The next prime is 1240244443. The reversal of 1240244423 is 3244420421.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1240244423 - 2⁴ = 1240244407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1240244392 and 1240244401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240244443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409988 + ... + 413001.

It is an arithmetic number, because the mean of its divisors is an integer number (170358930).

Almost surely, 2^1240244423 is an apocalyptic number.

1240244423 is a deficient number, since it is larger than the sum of its proper divisors (122627017).

1240244423 is a wasteful number, since it uses less digits than its factorization.

1240244423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823137.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 1240244423 is about 35217.1041256944. The cubic root of 1240244423 is about 1074.4076557842.

Adding to 1240244423 its reverse (3244420421), we get a palindrome (4484664844).

The spelling of 1240244423 in words is "one billion, two hundred forty million, two hundred forty-four thousand, four hundred twenty-three".