1340233 has 4 divisors (see below), whose sum is σ = 1398528. Its totient is φ = 1281940.

The previous prime is 1340221. The next prime is 1340237. The reversal of 1340233 is 3320431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1340233 is a prime.

It is a Duffinian number.

1340233 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1340237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29113 + ... + 29158.

It is an arithmetic number, because the mean of its divisors is an integer number (349632).

2^1340233 is an apocalyptic number.

It is an amenable number.

1340233 is a deficient number, since it is larger than the sum of its proper divisors (58295).

1340233 is an equidigital number, since it uses as much as digits as its factorization.

1340233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58294.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 1340233 is about 1157.6843265761. The cubic root of 1340233 is about 110.2537667346.

Adding to 1340233 its reverse (3320431), we get a palindrome (4660664).

The spelling of 1340233 in words is "one million, three hundred forty thousand, two hundred thirty-three".