1381043 has 2 divisors, whose sum is σ = 1381044. Its totient is φ = 1381042.

The previous prime is 1381033. The next prime is 1381057. The reversal of 1381043 is 3401831.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (3401831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1381043 - 2⁴ = 1381027 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1381033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690521 + 690522.

It is an arithmetic number, because the mean of its divisors is an integer number (690522).

2^1381043 is an apocalyptic number.

1381043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1381043 is an equidigital number, since it uses as much as digits as its factorization.

1381043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1381043 is about 1175.1778588792. The cubic root of 1381043 is about 111.3616696332.

Adding to 1381043 its reverse (3401831), we get a palindrome (4782874).

The spelling of 1381043 in words is "one million, three hundred eighty-one thousand, forty-three".