11420124140 has 12 divisors (see below), whose sum is σ = 23982260736. Its totient is φ = 4568049648.

The previous prime is 11420124103. The next prime is 11420124143. The reversal of 11420124140 is 4142102411.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 571006207 = 11420124140 / (1 + 1 + 4 + 2 + 0 + 1 + 2 + 4 + 1 + 4 + 0).

It is not an unprimeable number, because it can be changed into a prime (11420124143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285503084 + ... + 285503123.

It is an arithmetic number, because the mean of its divisors is an integer number (1998521728).

Almost surely, 2^11420124140 is an apocalyptic number.

11420124140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11420124140 is an abundant number, since it is smaller than the sum of its proper divisors (12562136596).

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

11420124140 is a wasteful number, since it uses less digits than its factorization.

11420124140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571006216 (or 571006214 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 11420124140 its reverse (4142102411), we get a palindrome (15562226551).

The spelling of 11420124140 in words is "eleven billion, four hundred twenty million, one hundred twenty-four thousand, one hundred forty".