1329742 has 12 divisors (see below), whose sum is σ = 2039616. Its totient is φ = 650180.

The previous prime is 1329733. The next prime is 1329761. The reversal of 1329742 is 2479231.

Its product of digits (3024) is a multiple of the sum of its prime divisors (252).

It is a self number, because there is not a number n which added to its sum of digits gives 1329742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6867 + ... + 7057.

It is an arithmetic number, because the mean of its divisors is an integer number (169968).

2^1329742 is an apocalyptic number.

1329742 is a deficient number, since it is larger than the sum of its proper divisors (709874).

1329742 is an equidigital number, since it uses as much as digits as its factorization.

1329742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 252 counting only the distinct ones).

The product of its digits is 3024, while the sum is 28.

The square root of 1329742 is about 1153.1443968558. The cubic root of 1329742 is about 109.9653334286.

The spelling of 1329742 in words is "one million, three hundred twenty-nine thousand, seven hundred forty-two".