1112253240 has 128 divisors (see below), whose sum is σ = 3945024000. Its totient is φ = 245457408.

The previous prime is 1112253239. The next prime is 1112253253. The reversal of 1112253240 is 423522111.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1531 + ... + 47189.

It is an arithmetic number, because the mean of its divisors is an integer number (30820500).

Almost surely, 2^1112253240 is an apocalyptic number.

1112253240 is a gapful number since it is divisible by the number (10) 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 1112253240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1972512000).

1112253240 is an abundant number, since it is smaller than the sum of its proper divisors (2832770760).

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

1112253240 is a wasteful number, since it uses less digits than its factorization.

1112253240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45709 (or 45705 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1112253240 is about 33350.4608663808. The cubic root of 1112253240 is about 1036.0989331240.

Adding to 1112253240 its reverse (423522111), we get a palindrome (1535775351).

The spelling of 1112253240 in words is "one billion, one hundred twelve million, two hundred fifty-three thousand, two hundred forty".