211544042 has 8 divisors (see below), whose sum is σ = 317568000. Its totient is φ = 105688044.

The previous prime is 211543993. The next prime is 211544063. The reversal of 211544042 is 240445112.

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 = 211543999 and 211544017.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38792 + ... + 43907.

It is an arithmetic number, because the mean of its divisors is an integer number (39696000).

Almost surely, 2^211544042 is an apocalyptic number.

211544042 is a deficient number, since it is larger than the sum of its proper divisors (106023958).

211544042 is a wasteful number, since it uses less digits than its factorization.

211544042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83980.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 211544042 is about 14544.5536885805. The cubic root of 211544042 is about 595.8454116884.

Adding to 211544042 its reverse (240445112), we get a palindrome (451989154).

The spelling of 211544042 in words is "two hundred eleven million, five hundred forty-four thousand, forty-two".