1113044420 has 24 divisors (see below), whose sum is σ = 2343125400. Its totient is φ = 444125952.

The previous prime is 1113044357. The next prime is 1113044423. The reversal of 1113044420 is 244403111.

It can be written as a sum of positive squares in 4 ways, for example, as 293711044 + 819333376 = 17138^2 + 28624^2 .

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 = 1113044392 and 1113044401.

It is not an unprimeable number, because it can be changed into a prime (1113044423) 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, 59855 + ... + 76214.

It is an arithmetic number, because the mean of its divisors is an integer number (97630225).

Almost surely, 2^1113044420 is an apocalyptic number.

1113044420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1113044420 is an abundant number, since it is smaller than the sum of its proper divisors (1230080980).

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

1113044420 is a wasteful number, since it uses less digits than its factorization.

1113044420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136487 (or 136485 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1113044420 is about 33362.3203629484. The cubic root of 1113044420 is about 1036.3445445945.

Adding to 1113044420 its reverse (244403111), we get a palindrome (1357447531).

The spelling of 1113044420 in words is "one billion, one hundred thirteen million, forty-four thousand, four hundred twenty".