1329023 has 4 divisors (see below), whose sum is σ = 1332240. Its totient is φ = 1325808.

The previous prime is 1329011. The next prime is 1329061. The reversal of 1329023 is 3209231.

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

It is a cyclic number.

It is not a de Polignac number, because 1329023 - 2¹⁰ = 1327999 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1328986 and 1329004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1329073) 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, 878 + ... + 1851.

It is an arithmetic number, because the mean of its divisors is an integer number (333060).

2^1329023 is an apocalyptic number.

1329023 is a deficient number, since it is larger than the sum of its proper divisors (3217).

1329023 is an equidigital number, since it uses as much as digits as its factorization.

1329023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3216.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 1329023 is about 1152.8325984288. The cubic root of 1329023 is about 109.9455102024.

The spelling of 1329023 in words is "one million, three hundred twenty-nine thousand, twenty-three".