1340432 has 10 divisors (see below), whose sum is σ = 2597118. Its totient is φ = 670208.

The previous prime is 1340419. The next prime is 1340441. The reversal of 1340432 is 2340431.

It can be written as a sum of positive squares in only one way, i.e., 1336336 + 4096 = 1156^2 + 64^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1340432.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41873 + ... + 41904.

2^1340432 is an apocalyptic number.

It is an amenable number.

1340432 is a deficient number, since it is larger than the sum of its proper divisors (1256686).

1340432 is an equidigital number, since it uses as much as digits as its factorization.

1340432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83785 (or 83779 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 1340432 is about 1157.7702708223. The cubic root of 1340432 is about 110.2592233514.

Adding to 1340432 its reverse (2340431), we get a palindrome (3680863).

Subtracting 1340432 from its reverse (2340431), we obtain a palindrome (999999).

The spelling of 1340432 in words is "one million, three hundred forty thousand, four hundred thirty-two".