11140042420 has 24 divisors (see below), whose sum is σ = 25193634984. Its totient is φ = 4113246336.

The previous prime is 11140042409. The next prime is 11140042469. The reversal of 11140042420 is 2424004111.

It can be written as a sum of positive squares in 4 ways, for example, as 10214416 + 11129828004 = 3196^2 + 105498^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21422899 + ... + 21423418.

It is an arithmetic number, because the mean of its divisors is an integer number (1049734791).

Almost surely, 2^11140042420 is an apocalyptic number.

11140042420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11140042420 is an abundant number, since it is smaller than the sum of its proper divisors (14053592564).

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

11140042420 is a wasteful number, since it uses less digits than its factorization.

11140042420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42846339 (or 42846337 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 11140042420 its reverse (2424004111), we get a palindrome (13564046531).

The spelling of 11140042420 in words is "eleven billion, one hundred forty million, forty-two thousand, four hundred twenty".