1105943 has 2 divisors, whose sum is σ = 1105944. Its totient is φ = 1105942.

The previous prime is 1105919. The next prime is 1105961. The reversal of 1105943 is 3495011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1105943 - 2⁶ = 1105879 is a prime.

It is equal to p₈₆₁₅₃ and since 1105943 and 86153 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1105913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552971 + 552972.

It is an arithmetic number, because the mean of its divisors is an integer number (552972).

2^1105943 is an apocalyptic number.

1105943 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105943 is an equidigital number, since it uses as much as digits as its factorization.

1105943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1105943 is about 1051.6382457861. The cubic root of 1105943 is about 103.4135820147.

It can be divided in two parts, 1105 and 943, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 1105943 in words is "one million, one hundred five thousand, nine hundred forty-three".