1380043 has 8 divisors (see below), whose sum is σ = 1670112. Its totient is φ = 1113216.

The previous prime is 1380031. The next prime is 1380047. The reversal of 1380043 is 3400831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1380043 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 1380043.

It is not an unprimeable number, because it can be changed into a prime (1380047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5680 + ... + 5917.

It is an arithmetic number, because the mean of its divisors is an integer number (208764).

2^1380043 is an apocalyptic number.

1380043 is a deficient number, since it is larger than the sum of its proper divisors (290069).

1380043 is a wasteful number, since it uses less digits than its factorization.

1380043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11621.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1380043 is about 1174.7523143199. The cubic root of 1380043 is about 111.3347845039.

Adding to 1380043 its reverse (3400831), we get a palindrome (4780874).

The spelling of 1380043 in words is "one million, three hundred eighty thousand, forty-three".