1240044321 has 8 divisors (see below), whose sum is σ = 1710406080. Its totient is φ = 798189392.

The previous prime is 1240044317. The next prime is 1240044343. The reversal of 1240044321 is 1234400421.

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 1240044321 - 2² = 1240044317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1240044371) 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, 7126605 + ... + 7126778.

It is an arithmetic number, because the mean of its divisors is an integer number (213800760).

Almost surely, 2^1240044321 is an apocalyptic number.

It is an amenable number.

1240044321 is a deficient number, since it is larger than the sum of its proper divisors (470361759).

1240044321 is a wasteful number, since it uses less digits than its factorization.

1240044321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14253415.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1240044321 is about 35214.2630336061. The cubic root of 1240044321 is about 1074.3498707540.

Adding to 1240044321 its reverse (1234400421), we get a palindrome (2474444742).

The spelling of 1240044321 in words is "one billion, two hundred forty million, forty-four thousand, three hundred twenty-one".