1156442112 has 144 divisors (see below), whose sum is σ = 3817588320. Its totient is φ = 330375168.

The previous prime is 1156442099. The next prime is 1156442117. The reversal of 1156442112 is 2112446511.

1156442112 is a `hidden beast` number, since 1 + 1 + 5 + 644 + 2 + 1 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (1156442117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124543 + ... + 133505.

It is an arithmetic number, because the mean of its divisors is an integer number (26511030).

Almost surely, 2^1156442112 is an apocalyptic number.

1156442112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1156442112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1908794160).

1156442112 is an abundant number, since it is smaller than the sum of its proper divisors (2661146208).

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

1156442112 is an equidigital number, since it uses as much as digits as its factorization.

1156442112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8998 (or 8975 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 1156442112 is about 34006.5010255392. The cubic root of 1156442112 is about 1049.6422400213.

Adding to 1156442112 its reverse (2112446511), we get a palindrome (3268888623).

The spelling of 1156442112 in words is "one billion, one hundred fifty-six million, four hundred forty-two thousand, one hundred twelve".