1320423 has 8 divisors (see below), whose sum is σ = 1896048. Its totient is φ = 812544.

The previous prime is 1320421. The next prime is 1320427. The reversal of 1320423 is 3240231.

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

It is not a de Polignac number, because 1320423 - 2¹ = 1320421 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16890 + ... + 16967.

It is an arithmetic number, because the mean of its divisors is an integer number (237006).

2^1320423 is an apocalyptic number.

1320423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1320423 is a deficient number, since it is larger than the sum of its proper divisors (575625).

1320423 is a wasteful number, since it uses less digits than its factorization.

1320423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33873.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 1320423 is about 1149.0966016833. The cubic root of 1320423 is about 109.7078473385.

Adding to 1320423 its reverse (3240231), we get a palindrome (4560654).

The spelling of 1320423 in words is "one million, three hundred twenty thousand, four hundred twenty-three".