11420243240 has 64 divisors (see below), whose sum is σ = 29450736000. Its totient is φ = 3904259328.

The previous prime is 11420243213. The next prime is 11420243267. The reversal of 11420243240 is 4234202411.

It is an interprime number because it is at equal distance from previous prime (11420243213) and next prime (11420243267).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39287 + ... + 156153.

It is an arithmetic number, because the mean of its divisors is an integer number (460167750).

Almost surely, 2^11420243240 is an apocalyptic number.

11420243240 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 11420243240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14725368000).

11420243240 is an abundant number, since it is smaller than the sum of its proper divisors (18030492760).

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

11420243240 is a wasteful number, since it uses less digits than its factorization.

11420243240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117234 (or 117230 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 11420243240 its reverse (4234202411), we get a palindrome (15654445651).

The spelling of 11420243240 in words is "eleven billion, four hundred twenty million, two hundred forty-three thousand, two hundred forty".