266122142 has 32 divisors (see below), whose sum is σ = 469947744. Its totient is φ = 111427200.

The previous prime is 266122139. The next prime is 266122147. The reversal of 266122142 is 241221662.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266122147) 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 15 ways as a sum of consecutive naturals, for example, 250292 + ... + 251352.

It is an arithmetic number, because the mean of its divisors is an integer number (14685867).

Almost surely, 2^266122142 is an apocalyptic number.

266122142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

266122142 is a deficient number, since it is larger than the sum of its proper divisors (203825602).

266122142 is a wasteful number, since it uses less digits than its factorization.

266122142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964.

The product of its digits is 2304, while the sum is 26.

The square root of 266122142 is about 16313.2505038082. The cubic root of 266122142 is about 643.2211805413.

The spelling of 266122142 in words is "two hundred sixty-six million, one hundred twenty-two thousand, one hundred forty-two".