266242142 has 8 divisors (see below), whose sum is σ = 399600432. Its totient is φ = 133042000.

The previous prime is 266242063. The next prime is 266242147. The reversal of 266242142 is 241242662.

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

It is a super-3 number, since 3×266242142³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266242147) by changing a digit.

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, 35234 + ... + 42117.

It is an arithmetic number, because the mean of its divisors is an integer number (49950054).

Almost surely, 2^266242142 is an apocalyptic number.

266242142 is a deficient number, since it is larger than the sum of its proper divisors (133358290).

266242142 is a wasteful number, since it uses less digits than its factorization.

266242142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79074.

The product of its digits is 9216, while the sum is 29.

The square root of 266242142 is about 16316.9280809839. The cubic root of 266242142 is about 643.3178466089.

The spelling of 266242142 in words is "two hundred sixty-six million, two hundred forty-two thousand, one hundred forty-two".