1105124778 has 48 divisors (see below), whose sum is σ = 2527761600. Its totient is φ = 347976000.

The previous prime is 1105124753. The next prime is 1105124789. The reversal of 1105124778 is 8774215011.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118278 + ... + 127278.

It is an arithmetic number, because the mean of its divisors is an integer number (52661700).

Almost surely, 2^1105124778 is an apocalyptic number.

1105124778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1105124778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1263880800).

1105124778 is an abundant number, since it is smaller than the sum of its proper divisors (1422636822).

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

1105124778 is a wasteful number, since it uses less digits than its factorization.

1105124778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9387 (or 9384 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 36.

The square root of 1105124778 is about 33243.4170626306. The cubic root of 1105124778 is about 1033.8807251923.

Adding to 1105124778 its reverse (8774215011), we get a palindrome (9879339789).

The spelling of 1105124778 in words is "one billion, one hundred five million, one hundred twenty-four thousand, seven hundred seventy-eight".