1105406543 has 4 divisors (see below), whose sum is σ = 1143524040. Its totient is φ = 1067289048.

The previous prime is 1105406527. The next prime is 1105406551. The reversal of 1105406543 is 3456045011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1105406543 - 2⁴ = 1105406527 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 38117467 = 1105406543 / (1 + 1 + 0 + 5 + 4 + 0 + 6 + 5 + 4 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105406503) 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, 19058705 + ... + 19058762.

It is an arithmetic number, because the mean of its divisors is an integer number (285881010).

Almost surely, 2^1105406543 is an apocalyptic number.

1105406543 is a deficient number, since it is larger than the sum of its proper divisors (38117497).

1105406543 is an equidigital number, since it uses as much as digits as its factorization.

1105406543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38117496.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1105406543 is about 33247.6546992416. The cubic root of 1105406543 is about 1033.9685845466.

The spelling of 1105406543 in words is "one billion, one hundred five million, four hundred six thousand, five hundred forty-three".