11420242440 has 96 divisors (see below), whose sum is σ = 35815288320. Its totient is φ = 2912973184.

The previous prime is 11420242411. The next prime is 11420242441. The reversal of 11420242440 is 4424202411.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 11420242440.

It is not an unprimeable number, because it can be changed into a prime (11420242441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26472 + ... + 153431.

It is an arithmetic number, because the mean of its divisors is an integer number (373075920).

Almost surely, 2^11420242440 is an apocalyptic number.

11420242440 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 11420242440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17907644160).

11420242440 is an abundant number, since it is smaller than the sum of its proper divisors (24395045880).

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

11420242440 is a wasteful number, since it uses less digits than its factorization.

11420242440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179963 (or 179936 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 11420242440 its reverse (4424202411), we get a palindrome (15844444851).

The spelling of 11420242440 in words is "eleven billion, four hundred twenty million, two hundred forty-two thousand, four hundred forty".