266122140 has 24 divisors (see below), whose sum is σ = 745142160. Its totient is φ = 70965888.

The previous prime is 266122139. The next prime is 266122147. The reversal of 266122140 is 41221662.

It is a self number, because there is not a number n which added to its sum of digits gives 266122140.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2217625 + ... + 2217744.

It is an arithmetic number, because the mean of its divisors is an integer number (31047590).

Almost surely, 2^266122140 is an apocalyptic number.

266122140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266122140 is an abundant number, since it is smaller than the sum of its proper divisors (479020020).

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

266122140 is a wasteful number, since it uses less digits than its factorization.

266122140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4435381 (or 4435379 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 266122140 is about 16313.2504425084. The cubic root of 266122140 is about 643.2211789300.

The spelling of 266122140 in words is "two hundred sixty-six million, one hundred twenty-two thousand, one hundred forty".