212530042 has 8 divisors (see below), whose sum is σ = 322377300. Its totient is φ = 105070944.

The previous prime is 212530013. The next prime is 212530057. The reversal of 212530042 is 240035212.

It can be written as a sum of positive squares in 2 ways, for example, as 206813161 + 5716881 = 14381^2 + 2391^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 596817 + ... + 597172.

Almost surely, 2^212530042 is an apocalyptic number.

212530042 is a deficient number, since it is larger than the sum of its proper divisors (109847258).

212530042 is a wasteful number, since it uses less digits than its factorization.

212530042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194080.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 212530042 is about 14578.4101327957. The cubic root of 212530042 is about 596.7697159108.

Adding to 212530042 its reverse (240035212), we get a palindrome (452565254).

The spelling of 212530042 in words is "two hundred twelve million, five hundred thirty thousand, forty-two".