2011442405 has 24 divisors (see below), whose sum is σ = 2810502648. Its totient is φ = 1377952128.

The previous prime is 2011442399. The next prime is 2011442441. The reversal of 2011442405 is 5042441102.

It can be written as a sum of positive squares in 4 ways, for example, as 30658369 + 1980784036 = 5537^2 + 44506^2 .

It is not a de Polignac number, because 2011442405 - 2¹⁰ = 2011441381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 299747 + ... + 306383.

It is an arithmetic number, because the mean of its divisors is an integer number (117104277).

Almost surely, 2^2011442405 is an apocalyptic number.

It is an amenable number.

2011442405 is a deficient number, since it is larger than the sum of its proper divisors (799060243).

2011442405 is a wasteful number, since it uses less digits than its factorization.

2011442405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7893 (or 7886 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 2011442405 is about 44849.1070702640. The cubic root of 2011442405 is about 1262.3192366757.

Adding to 2011442405 its reverse (5042441102), we get a palindrome (7053883507).

The spelling of 2011442405 in words is "two billion, eleven million, four hundred forty-two thousand, four hundred five".