211130042 has 8 divisors (see below), whose sum is σ = 316928532. Its totient is φ = 105487200.

The previous prime is 211130039. The next prime is 211130047. The reversal of 211130042 is 240031112.

It can be written as a sum of positive squares in 2 ways, for example, as 177129481 + 34000561 = 13309^2 + 5831^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 211129999 and 211130026.

It is not an unprimeable number, because it can be changed into a prime (211130047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35459 + ... + 40982.

Almost surely, 2^211130042 is an apocalyptic number.

211130042 is a deficient number, since it is larger than the sum of its proper divisors (105798490).

211130042 is a wasteful number, since it uses less digits than its factorization.

211130042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77824.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 211130042 is about 14530.3145870969. The cubic root of 211130042 is about 595.4564602213.

Adding to 211130042 its reverse (240031112), we get a palindrome (451161154).

The spelling of 211130042 in words is "two hundred eleven million, one hundred thirty thousand, forty-two".