1240324221 has 8 divisors (see below), whose sum is σ = 1655941824. Its totient is φ = 825794720.

The previous prime is 1240324201. The next prime is 1240324277. The reversal of 1240324221 is 1224230421.

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 1240324221 - 2²¹ = 1238227069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240324201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269361 + ... + 273926.

It is an arithmetic number, because the mean of its divisors is an integer number (206992728).

Almost surely, 2^1240324221 is an apocalyptic number.

It is an amenable number.

1240324221 is a deficient number, since it is larger than the sum of its proper divisors (415617603).

1240324221 is an equidigital number, since it uses as much as digits as its factorization.

1240324221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544051.

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

The square root of 1240324221 is about 35218.2370512779. The cubic root of 1240324221 is about 1074.4306979474.

Adding to 1240324221 its reverse (1224230421), we get a palindrome (2464554642).

The spelling of 1240324221 in words is "one billion, two hundred forty million, three hundred twenty-four thousand, two hundred twenty-one".