1100108420 has 96 divisors (see below), whose sum is σ = 2532775392. Its totient is φ = 399679488.

The previous prime is 1100108393. The next prime is 1100108453. The reversal of 1100108420 is 248010011.

It can be written as a sum of positive squares in 16 ways, for example, as 197346304 + 902762116 = 14048^2 + 30046^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1974782 + ... + 1975338.

It is an arithmetic number, because the mean of its divisors is an integer number (26383077).

Almost surely, 2^1100108420 is an apocalyptic number.

1100108420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1100108420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1266387696).

1100108420 is an abundant number, since it is smaller than the sum of its proper divisors (1432666972).

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

1100108420 is a wasteful number, since it uses less digits than its factorization.

1100108420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777 (or 775 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1100108420 is about 33167.8823562795. The cubic root of 1100108420 is about 1032.3140294361.

Adding to 1100108420 its reverse (248010011), we get a palindrome (1348118431).

The spelling of 1100108420 in words is "one billion, one hundred million, one hundred eight thousand, four hundred twenty".