1105511420 has 24 divisors (see below), whose sum is σ = 2500157184. Its totient is φ = 408188736.

The previous prime is 1105511417. The next prime is 1105511423. The reversal of 1105511420 is 241155011.

It is an interprime number because it is at equal distance from previous prime (1105511417) and next prime (1105511423).

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

It is a junction number, because it is equal to n+sod(n) for n = 1105511392 and 1105511401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105511423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2125724 + ... + 2126243.

It is an arithmetic number, because the mean of its divisors is an integer number (104173216).

Almost surely, 2^1105511420 is an apocalyptic number.

1105511420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1105511420 is an abundant number, since it is smaller than the sum of its proper divisors (1394645764).

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

1105511420 is a wasteful number, since it uses less digits than its factorization.

1105511420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4251989 (or 4251987 counting only the distinct ones).

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

The square root of 1105511420 is about 33249.2318708267. The cubic root of 1105511420 is about 1034.0012832536.

Adding to 1105511420 its reverse (241155011), we get a palindrome (1346666431).

The spelling of 1105511420 in words is "one billion, one hundred five million, five hundred eleven thousand, four hundred twenty".