266155242 has 8 divisors (see below), whose sum is σ = 532310496. Its totient is φ = 88718412.

The previous prime is 266155217. The next prime is 266155259. The reversal of 266155242 is 242551662.

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

266155242 is an admirable number.

It is a super-3 number, since 3×266155242³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22179598 + ... + 22179609.

It is an arithmetic number, because the mean of its divisors is an integer number (66538812).

Almost surely, 2^266155242 is an apocalyptic number.

266155242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266155242 is a wasteful number, since it uses less digits than its factorization.

266155242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44359212.

The product of its digits is 28800, while the sum is 33.

The square root of 266155242 is about 16314.2649849756. The cubic root of 266155242 is about 643.2478471668.

The spelling of 266155242 in words is "two hundred sixty-six million, one hundred fifty-five thousand, two hundred forty-two".