11420240409 has 16 divisors (see below), whose sum is σ = 17331531840. Its totient is φ = 7427797920.

The previous prime is 11420240401. The next prime is 11420240411. The reversal of 11420240409 is 90404202411.

It is a happy number.

11420240409 is a `hidden beast` number, since 1 + 14 + 2 + 0 + 240 + 409 = 666.

It is not a de Polignac number, because 11420240409 - 2³ = 11420240401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (11420240401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5157087 + ... + 5159300.

It is an arithmetic number, because the mean of its divisors is an integer number (1083220740).

Almost surely, 2^11420240409 is an apocalyptic number.

It is an amenable number.

11420240409 is a deficient number, since it is larger than the sum of its proper divisors (5911291431).

11420240409 is a wasteful number, since it uses less digits than its factorization.

11420240409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10316437 (or 10316431 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The spelling of 11420240409 in words is "eleven billion, four hundred twenty million, two hundred forty thousand, four hundred nine".