2011440042 has 12 divisors (see below), whose sum is σ = 4358120130. Its totient is φ = 670480008.

The previous prime is 2011440037. The next prime is 2011440077. The reversal of 2011440042 is 2400441102.

It can be written as a sum of positive squares in only one way, i.e., 1164106161 + 847333881 = 34119^2 + 29109^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 111746669 = 2011440042 / (2 + 0 + 1 + 1 + 4 + 4 + 0 + 0 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 2011439997 and 2011440024.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55873317 + ... + 55873352.

Almost surely, 2^2011440042 is an apocalyptic number.

2011440042 is an abundant number, since it is smaller than the sum of its proper divisors (2346680088).

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

2011440042 is a wasteful number, since it uses less digits than its factorization.

2011440042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111746677 (or 111746674 counting only the distinct ones).

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

The square root of 2011440042 is about 44849.0807263649. The cubic root of 2011440042 is about 1262.3187423602.

Adding to 2011440042 its reverse (2400441102), we get a palindrome (4411881144).

The spelling of 2011440042 in words is "two billion, eleven million, four hundred forty thousand, forty-two".