1105244145 has 12 divisors (see below), whose sum is σ = 1915756596. Its totient is φ = 589463520.

The previous prime is 1105244141. The next prime is 1105244167. The reversal of 1105244145 is 5414425011.

It can be written as a sum of positive squares in 2 ways, for example, as 367143921 + 738100224 = 19161^2 + 27168^2 .

It is not a de Polignac number, because 1105244145 - 2² = 1105244141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1105244141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12280446 + ... + 12280535.

It is an arithmetic number, because the mean of its divisors is an integer number (159646383).

Almost surely, 2^1105244145 is an apocalyptic number.

1105244145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1105244145 is a deficient number, since it is larger than the sum of its proper divisors (810512451).

1105244145 is a wasteful number, since it uses less digits than its factorization.

1105244145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24560992 (or 24560989 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 1105244145 is about 33245.2123620831. The cubic root of 1105244145 is about 1033.9179477757.

Adding to 1105244145 its reverse (5414425011), we get a palindrome (6519669156).

The spelling of 1105244145 in words is "one billion, one hundred five million, two hundred forty-four thousand, one hundred forty-five".