1323140421 has 8 divisors (see below), whose sum is σ = 1767096064. Its totient is φ = 880639200.

The previous prime is 1323140363. The next prime is 1323140437. The reversal of 1323140421 is 1240413231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1323140421 - 2¹⁴ = 1323124037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323140491) 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, 361480 + ... + 365121.

It is an arithmetic number, because the mean of its divisors is an integer number (220887008).

Almost surely, 2^1323140421 is an apocalyptic number.

It is an amenable number.

1323140421 is a deficient number, since it is larger than the sum of its proper divisors (443955643).

1323140421 is an equidigital number, since it uses as much as digits as its factorization.

1323140421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727211.

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

The square root of 1323140421 is about 36374.9971958762. The cubic root of 1323140421 is about 1097.8305508896.

Adding to 1323140421 its reverse (1240413231), we get a palindrome (2563553652).

The spelling of 1323140421 in words is "one billion, three hundred twenty-three million, one hundred forty thousand, four hundred twenty-one".