1423113121 has 4 divisors (see below), whose sum is σ = 1423329412. Its totient is φ = 1422896832.

The previous prime is 1423113089. The next prime is 1423113151. The reversal of 1423113121 is 1213113241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 160376896 + 1262736225 = 12664^2 + 35535^2 .

It is a cyclic number.

It is not a de Polignac number, because 1423113121 - 2⁵ = 1423113089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1423113151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97956 + ... + 111541.

It is an arithmetic number, because the mean of its divisors is an integer number (355832353).

Almost surely, 2^1423113121 is an apocalyptic number.

It is an amenable number.

1423113121 is a deficient number, since it is larger than the sum of its proper divisors (216291).

1423113121 is an equidigital number, since it uses as much as digits as its factorization.

1423113121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216290.

The product of its digits is 144, while the sum is 19.

The square root of 1423113121 is about 37724.1715747344. The cubic root of 1423113121 is about 1124.8116546586.

Adding to 1423113121 its reverse (1213113241), we get a palindrome (2636226362).

The spelling of 1423113121 in words is "one billion, four hundred twenty-three million, one hundred thirteen thousand, one hundred twenty-one".