266169942 has 16 divisors (see below), whose sum is σ = 591488880. Its totient is φ = 88723296.

The previous prime is 266169941. The next prime is 266169949. The reversal of 266169942 is 249961662.

266169942 is a `hidden beast` number, since 26 + 616 + 9 + 9 + 4 + 2 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266169941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2464483 + ... + 2464590.

It is an arithmetic number, because the mean of its divisors is an integer number (36968055).

Almost surely, 2^266169942 is an apocalyptic number.

266169942 is an abundant number, since it is smaller than the sum of its proper divisors (325318938).

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

266169942 is a wasteful number, since it uses less digits than its factorization.

266169942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4929084 (or 4929078 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 266169942 is about 16314.7155047215. The cubic root of 266169942 is about 643.2596893398.

The spelling of 266169942 in words is "two hundred sixty-six million, one hundred sixty-nine thousand, nine hundred forty-two".