266042056 has 32 divisors (see below), whose sum is σ = 589752000. Its totient is φ = 110085696.

The previous prime is 266042053. The next prime is 266042057. The reversal of 266042056 is 650240662.

It is not an unprimeable number, because it can be changed into a prime (266042053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80286 + ... + 83533.

It is an arithmetic number, because the mean of its divisors is an integer number (18429750).

Almost surely, 2^266042056 is an apocalyptic number.

It is an amenable number.

266042056 is an abundant number, since it is smaller than the sum of its proper divisors (323709944).

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

266042056 is a wasteful number, since it uses less digits than its factorization.

266042056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163861 (or 163857 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 266042056 is about 16310.7956887455. The cubic root of 266042056 is about 643.1566510496.

The spelling of 266042056 in words is "two hundred sixty-six million, forty-two thousand, fifty-six".