266236142 has 4 divisors (see below), whose sum is σ = 399354216. Its totient is φ = 133118070.

The previous prime is 266236141. The next prime is 266236163. The reversal of 266236142 is 241632662.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 266236099 and 266236108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266236141) 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 as a sum of consecutive naturals, namely, 66559034 + ... + 66559037.

It is an arithmetic number, because the mean of its divisors is an integer number (99838554).

Almost surely, 2^266236142 is an apocalyptic number.

266236142 is a deficient number, since it is larger than the sum of its proper divisors (133118074).

266236142 is a wasteful number, since it uses less digits than its factorization.

266236142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133118073.

The product of its digits is 20736, while the sum is 32.

The square root of 266236142 is about 16316.7442218109. The cubic root of 266236142 is about 643.3130139955.

The spelling of 266236142 in words is "two hundred sixty-six million, two hundred thirty-six thousand, one hundred forty-two".