1240111240 has 128 divisors (see below), whose sum is σ = 3167631360. Its totient is φ = 434294784.

The previous prime is 1240111237. The next prime is 1240111261. The reversal of 1240111240 is 421110421.

It is a happy 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, 577609 + ... + 579751.

It is an arithmetic number, because the mean of its divisors is an integer number (24747120).

Almost surely, 2^1240111240 is an apocalyptic number.

1240111240 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 1240111240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1583815680).

1240111240 is an abundant number, since it is smaller than the sum of its proper divisors (1927520120).

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

1240111240 is a wasteful number, since it uses less digits than its factorization.

1240111240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231 (or 2227 counting only the distinct ones).

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

The square root of 1240111240 is about 35215.2131897565. The cubic root of 1240111240 is about 1074.3691961724.

Adding to 1240111240 its reverse (421110421), we get a palindrome (1661221661).

The spelling of 1240111240 in words is "one billion, two hundred forty million, one hundred eleven thousand, two hundred forty".