1323240121 has 16 divisors (see below), whose sum is σ = 1558158208. Its totient is φ = 1100304000.

The previous prime is 1323240097. The next prime is 1323240167. The reversal of 1323240121 is 1210423231.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1323240121 - 2⁹ = 1323239609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323240181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9946 + ... + 52396.

It is an arithmetic number, because the mean of its divisors is an integer number (97384888).

Almost surely, 2^1323240121 is an apocalyptic number.

It is an amenable number.

1323240121 is a deficient number, since it is larger than the sum of its proper divisors (234918087).

1323240121 is an equidigital number, since it uses as much as digits as its factorization.

1323240121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42592.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1323240121 is about 36376.3676169020. The cubic root of 1323240121 is about 1097.8581244198.

Adding to 1323240121 its reverse (1210423231), we get a palindrome (2533663352).

The spelling of 1323240121 in words is "one billion, three hundred twenty-three million, two hundred forty thousand, one hundred twenty-one".