11140021242 has 96 divisors (see below), whose sum is σ = 27950832000. Its totient is φ = 3140780544.

The previous prime is 11140021231. The next prime is 11140021247. The reversal of 11140021242 is 24212004111.

11140021242 is a `hidden beast` number, since 1 + 1 + 1 + 400 + 21 + 242 = 666.

It is a super-2 number, since 2×11140021242² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (11140021247) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10619134 + ... + 10620182.

It is an arithmetic number, because the mean of its divisors is an integer number (291154500).

Almost surely, 2^11140021242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11140021242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13975416000).

11140021242 is an abundant number, since it is smaller than the sum of its proper divisors (16810810758).

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

11140021242 is a wasteful number, since it uses less digits than its factorization.

11140021242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100 (or 2097 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11140021242 its reverse (24212004111), we get a palindrome (35352025353).

The spelling of 11140021242 in words is "eleven billion, one hundred forty million, twenty-one thousand, two hundred forty-two".