1111442556 has 96 divisors (see below), whose sum is σ = 3057306112. Its totient is φ = 307618560.

The previous prime is 1111442551. The next prime is 1111442567. The reversal of 1111442556 is 6552441111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111442551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 860271 + ... + 861561.

Almost surely, 2^1111442556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111442556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1528653056).

1111442556 is an abundant number, since it is smaller than the sum of its proper divisors (1945863556).

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

1111442556 is a wasteful number, since it uses less digits than its factorization.

1111442556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619 (or 1617 counting only the distinct ones).

The product of its digits is 4800, while the sum is 30.

The square root of 1111442556 is about 33338.3046359589. The cubic root of 1111442556 is about 1035.8471460458.

Adding to 1111442556 its reverse (6552441111), we get a palindrome (7663883667).

It can be divided in two parts, 111 and 1442556, that multiplied together give a square (160123716 = 12654²).

The spelling of 1111442556 in words is "one billion, one hundred eleven million, four hundred forty-two thousand, five hundred fifty-six".