1043381 has 4 divisors (see below), whose sum is σ = 1046592. Its totient is φ = 1040172.

The previous prime is 1043377. The next prime is 1043401. The reversal of 1043381 is 1833401.

It is a happy number.

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 not a de Polignac number, because 1043381 - 2² = 1043377 is a prime.

It is a super-2 number, since 2×1043381² = 2177287822322, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1043311) 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, 1055 + ... + 1788.

It is an arithmetic number, because the mean of its divisors is an integer number (261648).

2^1043381 is an apocalyptic number.

It is an amenable number.

1043381 is a deficient number, since it is larger than the sum of its proper divisors (3211).

1043381 is an equidigital number, since it uses as much as digits as its factorization.

1043381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3210.

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

The square root of 1043381 is about 1021.4602292796. The cubic root of 1043381 is about 101.4256130290.

Adding to 1043381 its sum of digits (20), we get a palindrome (1043401).

Adding to 1043381 its reverse (1833401), we get a palindrome (2876782).

The spelling of 1043381 in words is "one million, forty-three thousand, three hundred eighty-one".