211514842 has 16 divisors (see below), whose sum is σ = 395560512. Its totient is φ = 82408320.

The previous prime is 211514791. The next prime is 211514861. The reversal of 211514842 is 248415112.

It is a self number, because there is not a number n which added to its sum of digits gives 211514842.

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 7 ways as a sum of consecutive naturals, for example, 686583 + ... + 686890.

It is an arithmetic number, because the mean of its divisors is an integer number (24722532).

Almost surely, 2^211514842 is an apocalyptic number.

211514842 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211514842 is a deficient number, since it is larger than the sum of its proper divisors (184045670).

211514842 is a wasteful number, since it uses less digits than its factorization.

211514842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373493.

The product of its digits is 2560, while the sum is 28.

The square root of 211514842 is about 14543.5498417683. The cubic root of 211514842 is about 595.8179950388.

Adding to 211514842 its reverse (248415112), we get a palindrome (459929954).

The spelling of 211514842 in words is "two hundred eleven million, five hundred fourteen thousand, eight hundred forty-two".