11240420240 has 40 divisors (see below), whose sum is σ = 29867403840. Its totient is φ = 3853858176.

The previous prime is 11240420239. The next prime is 11240420249. The reversal of 11240420240 is 4202404211.

It is a tau number, because it is divible by the number of its divisors (40).

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

It is not an unprimeable number, because it can be changed into a prime (11240420249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10035530 + ... + 10036649.

It is an arithmetic number, because the mean of its divisors is an integer number (746685096).

Almost surely, 2^11240420240 is an apocalyptic number.

11240420240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11240420240 is an abundant number, since it is smaller than the sum of its proper divisors (18626983600).

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

11240420240 is a wasteful number, since it uses less digits than its factorization.

11240420240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20072199 (or 20072193 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 11240420240 its reverse (4202404211), we get a palindrome (15442824451).

The spelling of 11240420240 in words is "eleven billion, two hundred forty million, four hundred twenty thousand, two hundred forty".