1111444420 has 12 divisors (see below), whose sum is σ = 2334033324. Its totient is φ = 444577760.

The previous prime is 1111444381. The next prime is 1111444423. The reversal of 1111444420 is 244441111.

It can be written as a sum of positive squares in 2 ways, for example, as 232440516 + 879003904 = 15246^2 + 29648^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1111444391 and 1111444400.

It is not an unprimeable number, because it can be changed into a prime (1111444423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27786091 + ... + 27786130.

It is an arithmetic number, because the mean of its divisors is an integer number (194502777).

Almost surely, 2^1111444420 is an apocalyptic number.

1111444420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111444420 is an abundant number, since it is smaller than the sum of its proper divisors (1222588904).

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

1111444420 is a wasteful number, since it uses less digits than its factorization.

1111444420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55572230 (or 55572228 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 1111444420 is about 33338.3325917779. The cubic root of 1111444420 is about 1035.8477251185.

Adding to 1111444420 its reverse (244441111), we get a palindrome (1355885531).

The spelling of 1111444420 in words is "one billion, one hundred eleven million, four hundred forty-four thousand, four hundred twenty".