1320734 has 4 divisors (see below), whose sum is σ = 1981104. Its totient is φ = 660366.

The previous prime is 1320731. The next prime is 1320749. The reversal of 1320734 is 4370231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4370231 = 41 ⋅106591.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330182 + ... + 330185.

It is an arithmetic number, because the mean of its divisors is an integer number (495276).

2^1320734 is an apocalyptic number.

1320734 is a deficient number, since it is larger than the sum of its proper divisors (660370).

1320734 is an equidigital number, since it uses as much as digits as its factorization.

1320734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660369.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 1320734 is about 1149.2319174127. The cubic root of 1320734 is about 109.7164598468.

Adding to 1320734 its reverse (4370231), we get a palindrome (5690965).

The spelling of 1320734 in words is "one million, three hundred twenty thousand, seven hundred thirty-four".