266206042 has 4 divisors (see below), whose sum is σ = 399309066. Its totient is φ = 133103020.

The previous prime is 266206033. The next prime is 266206067. The reversal of 266206042 is 240602662.

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., 225870841 + 40335201 = 15029^2 + 6351^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 266206042.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66551509 + ... + 66551512.

Almost surely, 2^266206042 is an apocalyptic number.

266206042 is a deficient number, since it is larger than the sum of its proper divisors (133103024).

266206042 is a wasteful number, since it uses less digits than its factorization.

266206042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133103023.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 266206042 is about 16315.8218303584. The cubic root of 266206042 is about 643.2887692888.

The spelling of 266206042 in words is "two hundred sixty-six million, two hundred six thousand, forty-two".