211442405342 has 16 divisors (see below), whose sum is σ = 362550975840. Its totient is φ = 90598603488.

The previous prime is 211442405327. The next prime is 211442405359. The reversal of 211442405342 is 243504244112.

It is a junction number, because it is equal to n+sod(n) for n = 211442405299 and 211442405308.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1563617 + ... + 1693452.

It is an arithmetic number, because the mean of its divisors is an integer number (22659435990).

Almost surely, 2^211442405342 is an apocalyptic number.

211442405342 is a deficient number, since it is larger than the sum of its proper divisors (151108570498).

211442405342 is a wasteful number, since it uses less digits than its factorization.

211442405342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3261715.

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 211442405342 its reverse (243504244112), we get a palindrome (454946649454).

The spelling of 211442405342 in words is "two hundred eleven billion, four hundred forty-two million, four hundred five thousand, three hundred forty-two".