1105211540 has 48 divisors (see below), whose sum is σ = 2340321984. Its totient is φ = 438412800.

The previous prime is 1105211537. The next prime is 1105211561. The reversal of 1105211540 is 451125011.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2250695 + ... + 2251185.

It is an arithmetic number, because the mean of its divisors is an integer number (48756708).

Almost surely, 2^1105211540 is an apocalyptic number.

1105211540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1105211540 is an abundant number, since it is smaller than the sum of its proper divisors (1235110444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1105211540 is a wasteful number, since it uses less digits than its factorization.

1105211540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208 (or 1206 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 1105211540 is about 33244.7219871065. The cubic root of 1105211540 is about 1033.9077807230.

Adding to 1105211540 its reverse (451125011), we get a palindrome (1556336551).

The spelling of 1105211540 in words is "one billion, one hundred five million, two hundred eleven thousand, five hundred forty".