1105605427 has 4 divisors (see below), whose sum is σ = 1115938296. Its totient is φ = 1095272560.

The previous prime is 1105605409. The next prime is 1105605433. The reversal of 1105605427 is 7245065011.

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 1105605427 - 2²³ = 1097216819 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1105605407) 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, 5166274 + ... + 5166487.

It is an arithmetic number, because the mean of its divisors is an integer number (278984574).

Almost surely, 2^1105605427 is an apocalyptic number.

1105605427 is a deficient number, since it is larger than the sum of its proper divisors (10332869).

1105605427 is a wasteful number, since it uses less digits than its factorization.

1105605427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10332868.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 1105605427 is about 33250.6455125310. The cubic root of 1105605427 is about 1034.0305911383.

The spelling of 1105605427 in words is "one billion, one hundred five million, six hundred five thousand, four hundred twenty-seven".