2140420111 has 4 divisors (see below), whose sum is σ = 2140716112. Its totient is φ = 2140124112.

The previous prime is 2140420103. The next prime is 2140420133. The reversal of 2140420111 is 1110240412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2140420111 - 2³ = 2140420103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140420171) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 136875 + ... + 151708.

It is an arithmetic number, because the mean of its divisors is an integer number (535179028).

Almost surely, 2^2140420111 is an apocalyptic number.

2140420111 is a deficient number, since it is larger than the sum of its proper divisors (296001).

2140420111 is an equidigital number, since it uses as much as digits as its factorization.

2140420111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296000.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 2140420111 is about 46264.6745476503. The cubic root of 2140420111 is about 1288.7430640826.

Adding to 2140420111 its reverse (1110240412), we get a palindrome (3250660523).

The spelling of 2140420111 in words is "two billion, one hundred forty million, four hundred twenty thousand, one hundred eleven".