20340042111 has 96 divisors (see below), whose sum is σ = 32544046080. Its totient is φ = 12668223744.

The previous prime is 20340042109. The next prime is 20340042131. The reversal of 20340042111 is 11124004302.

20340042111 is a `hidden beast` number, since 203 + 40 + 0 + 421 + 1 + 1 = 666.

It is not a de Polignac number, because 20340042111 - 2¹ = 20340042109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20340042101) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 51234165 + ... + 51234561.

It is an arithmetic number, because the mean of its divisors is an integer number (339000480).

Almost surely, 2^20340042111 is an apocalyptic number.

20340042111 is a deficient number, since it is larger than the sum of its proper divisors (12204003969).

20340042111 is a wasteful number, since it uses less digits than its factorization.

20340042111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20340042111 its reverse (11124004302), we get a palindrome (31464046413).

The spelling of 20340042111 in words is "twenty billion, three hundred forty million, forty-two thousand, one hundred eleven".