1321423041 has 4 divisors (see below), whose sum is σ = 1761897392. Its totient is φ = 880948692.

The previous prime is 1321423031. The next prime is 1321423049. The reversal of 1321423041 is 1403241231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1321423041 - 2⁵ = 1321423009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321422999 and 1321423017.

It is not an unprimeable number, because it can be changed into a prime (1321423049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220237171 + ... + 220237176.

It is an arithmetic number, because the mean of its divisors is an integer number (440474348).

Almost surely, 2^1321423041 is an apocalyptic number.

It is an amenable number.

1321423041 is a deficient number, since it is larger than the sum of its proper divisors (440474351).

1321423041 is an equidigital number, since it uses as much as digits as its factorization.

1321423041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440474350.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1321423041 is about 36351.3829310523. The cubic root of 1321423041 is about 1097.3553661171.

Adding to 1321423041 its reverse (1403241231), we get a palindrome (2724664272).

The spelling of 1321423041 in words is "one billion, three hundred twenty-one million, four hundred twenty-three thousand, forty-one".