1111244240 has 20 divisors (see below), whose sum is σ = 2583643044. Its totient is φ = 444497664.

The previous prime is 1111244159. The next prime is 1111244249. The reversal of 1111244240 is 424421111.

It can be written as a sum of positive squares in 2 ways, for example, as 587383696 + 523860544 = 24236^2 + 22888^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111244249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6945197 + ... + 6945356.

Almost surely, 2^1111244240 is an apocalyptic number.

1111244240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111244240 is an abundant number, since it is smaller than the sum of its proper divisors (1472398804).

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

1111244240 is a wasteful number, since it uses less digits than its factorization.

1111244240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13890566 (or 13890560 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 1111244240 is about 33335.3302068541. The cubic root of 1111244240 is about 1035.7855332404.

Adding to 1111244240 its reverse (424421111), we get a palindrome (1535665351).

The spelling of 1111244240 in words is "one billion, one hundred eleven million, two hundred forty-four thousand, two hundred forty".