211700242 has 32 divisors (see below), whose sum is σ = 363625920. Its totient is φ = 91627200.

The previous prime is 211700239. The next prime is 211700311. The reversal of 211700242 is 242007112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47773 + ... + 52015.

It is an arithmetic number, because the mean of its divisors is an integer number (11363310).

Almost surely, 2^211700242 is an apocalyptic number.

211700242 is a deficient number, since it is larger than the sum of its proper divisors (151925678).

211700242 is a wasteful number, since it uses less digits than its factorization.

211700242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4378.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 211700242 is about 14549.9224052914. The cubic root of 211700242 is about 595.9920291563.

Adding to 211700242 its reverse (242007112), we get a palindrome (453707354).

The spelling of 211700242 in words is "two hundred eleven million, seven hundred thousand, two hundred forty-two".