266220042 has 32 divisors (see below), whose sum is σ = 586609344. Its totient is φ = 79872000.

The previous prime is 266220023. The next prime is 266220047. The reversal of 266220042 is 240022662.

266220042 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×266220042² = 141746221524963528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 266219994 and 266220021.

It is not an unprimeable number, because it can be changed into a prime (266220047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13303 + ... + 26634.

It is an arithmetic number, because the mean of its divisors is an integer number (18331542).

Almost surely, 2^266220042 is an apocalyptic number.

266220042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

266220042 is an abundant number, since it is smaller than the sum of its proper divisors (320389302).

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

266220042 is a wasteful number, since it uses less digits than its factorization.

266220042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40054.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 266220042 is about 16316.2508561250. The cubic root of 266220042 is about 643.3000461239.

The spelling of 266220042 in words is "two hundred sixty-six million, two hundred twenty thousand, forty-two".