1105720103 has 32 divisors (see below), whose sum is σ = 1245404160. Its totient is φ = 977034240.

The previous prime is 1105720097. The next prime is 1105720111. The reversal of 1105720103 is 3010275011.

It is a cyclic number.

It is not a de Polignac number, because 1105720103 - 2⁸ = 1105719847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105720163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2367476 + ... + 2367942.

It is an arithmetic number, because the mean of its divisors is an integer number (38918880).

Almost surely, 2^1105720103 is an apocalyptic number.

1105720103 is a deficient number, since it is larger than the sum of its proper divisors (139684057).

1105720103 is a wasteful number, since it uses less digits than its factorization.

1105720103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 1105720103 is about 33252.3698854683. The cubic root of 1105720103 is about 1034.0663405987.

Adding to 1105720103 its reverse (3010275011), we get a palindrome (4115995114).

The spelling of 1105720103 in words is "one billion, one hundred five million, seven hundred twenty thousand, one hundred three".