1105140405 has 16 divisors (see below), whose sum is σ = 1784752704. Its totient is φ = 583898880.

The previous prime is 1105140397. The next prime is 1105140419. The reversal of 1105140405 is 5040415011.

It is not a de Polignac number, because 1105140405 - 2³ = 1105140397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 342676 + ... + 345885.

It is an arithmetic number, because the mean of its divisors is an integer number (111547044).

Almost surely, 2^1105140405 is an apocalyptic number.

1105140405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1105140405 is a deficient number, since it is larger than the sum of its proper divisors (679612299).

1105140405 is a wasteful number, since it uses less digits than its factorization.

1105140405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688676.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1105140405 is about 33243.6521008147. The cubic root of 1105140405 is about 1033.8855983609.

Adding to 1105140405 its reverse (5040415011), we get a palindrome (6145555416).

The spelling of 1105140405 in words is "one billion, one hundred five million, one hundred forty thousand, four hundred five".