266210042 has 24 divisors (see below), whose sum is σ = 477070164. Its totient is φ = 111004992.

The previous prime is 266210017. The next prime is 266210047. The reversal of 266210042 is 240012662.

It can be written as a sum of positive squares in 2 ways, for example, as 227135041 + 39075001 = 15071^2 + 6251^2 .

It is not an unprimeable number, because it can be changed into a prime (266210047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33083 + ... + 40334.

Almost surely, 2^266210042 is an apocalyptic number.

266210042 is a deficient number, since it is larger than the sum of its proper divisors (210860122).

266210042 is a wasteful number, since it uses less digits than its factorization.

266210042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73470 (or 73463 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 266210042 is about 16315.9444103000. The cubic root of 266210042 is about 643.2919912820.

The spelling of 266210042 in words is "two hundred sixty-six million, two hundred ten thousand, forty-two".