211142010042 has 40 divisors (see below), whose sum is σ = 488376273792. Its totient is φ = 68110324200.

The previous prime is 211142010031. The next prime is 211142010059. The reversal of 211142010042 is 240010241112.

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 = 211142009997 and 211142010024.

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 19 ways as a sum of consecutive naturals, for example, 21016684 + ... + 21026727.

Almost surely, 2^211142010042 is an apocalyptic number.

211142010042 is an abundant number, since it is smaller than the sum of its proper divisors (277234263750).

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

211142010042 is a wasteful number, since it uses less digits than its factorization.

211142010042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42043456 (or 42043447 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 211142010042 its reverse (240010241112), we get a palindrome (451152251154).

The spelling of 211142010042 in words is "two hundred eleven billion, one hundred forty-two million, ten thousand, forty-two".