11420040042 has 32 divisors (see below), whose sum is σ = 25996844160. Its totient is φ = 3713833440.

The previous prime is 11420040029. The next prime is 11420040067. The reversal of 11420040042 is 24004002411.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11420039997 and 11420040024.

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, 2576838 + ... + 2581265.

It is an arithmetic number, because the mean of its divisors is an integer number (812401380).

Almost surely, 2^11420040042 is an apocalyptic number.

11420040042 is an abundant number, since it is smaller than the sum of its proper divisors (14576804118).

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

11420040042 is a wasteful number, since it uses less digits than its factorization.

11420040042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5158155 (or 5158149 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 11420040042 its reverse (24004002411), we get a palindrome (35424042453).

The spelling of 11420040042 in words is "eleven billion, four hundred twenty million, forty thousand, forty-two".