1111042240 has 224 divisors, whose sum is σ = 3352702464. Its totient is φ = 340623360.

The previous prime is 1111042217. The next prime is 1111042241. The reversal of 1111042240 is 422401111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (1111042241) 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, 1650544 + ... + 1651216.

Almost surely, 2^1111042240 is an apocalyptic number.

1111042240 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 1111042240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1676351232).

1111042240 is an abundant number, since it is smaller than the sum of its proper divisors (2241660224).

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

1111042240 is a wasteful number, since it uses less digits than its factorization.

1111042240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775 (or 765 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1111042240 is about 33332.3002506578. The cubic root of 1111042240 is about 1035.7227683536.

Adding to 1111042240 its reverse (422401111), we get a palindrome (1533443351).

The spelling of 1111042240 in words is "one billion, one hundred eleven million, forty-two thousand, two hundred forty".