211330042 has 24 divisors (see below), whose sum is σ = 402274080. Its totient is φ = 82335960.

The previous prime is 211330037. The next prime is 211330061. The reversal of 211330042 is 240033112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 211329998 and 211330025.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96942 + ... + 99097.

It is an arithmetic number, because the mean of its divisors is an integer number (16761420).

Almost surely, 2^211330042 is an apocalyptic number.

211330042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211330042 is a deficient number, since it is larger than the sum of its proper divisors (190944038).

211330042 is a wasteful number, since it uses less digits than its factorization.

211330042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196066 (or 196059 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 211330042 is about 14537.1951214806. The cubic root of 211330042 is about 595.6444229042.

Adding to 211330042 its reverse (240033112), we get a palindrome (451363154).

The spelling of 211330042 in words is "two hundred eleven million, three hundred thirty thousand, forty-two".