1111424420 has 24 divisors (see below), whose sum is σ = 2414475000. Its totient is φ = 429239552.

The previous prime is 1111424417. The next prime is 1111424467. The reversal of 1111424420 is 244241111.

It can be written as a sum of positive squares in 4 ways, for example, as 23348224 + 1088076196 = 4832^2 + 32986^2 .

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 = 1111424392 and 1111424401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 957545 + ... + 958704.

It is an arithmetic number, because the mean of its divisors is an integer number (100603125).

Almost surely, 2^1111424420 is an apocalyptic number.

1111424420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111424420 is an abundant number, since it is smaller than the sum of its proper divisors (1303050580).

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

1111424420 is a wasteful number, since it uses less digits than its factorization.

1111424420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916287 (or 1916285 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 1111424420 is about 33338.0326354151. The cubic root of 1111424420 is about 1035.8415118587.

Adding to 1111424420 its reverse (244241111), we get a palindrome (1355665531).

The spelling of 1111424420 in words is "one billion, one hundred eleven million, four hundred twenty-four thousand, four hundred twenty".