210000242 has 4 divisors (see below), whose sum is σ = 315000366. Its totient is φ = 105000120.

The previous prime is 210000239. The next prime is 210000299. The reversal of 210000242 is 242000012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 209641441 + 358801 = 14479^2 + 599^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52500059 + ... + 52500062.

Almost surely, 2^210000242 is an apocalyptic number.

210000242 is a deficient number, since it is larger than the sum of its proper divisors (105000124).

210000242 is a wasteful number, since it uses less digits than its factorization.

210000242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105000123.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 210000242 is about 14491.3850959803. The cubic root of 210000242 is about 594.3924235983.

Adding to 210000242 its reverse (242000012), we get a palindrome (452000254).

The spelling of 210000242 in words is "two hundred ten million, two hundred forty-two", and thus it is an aban number.