266373742 has 4 divisors (see below), whose sum is σ = 399560616. Its totient is φ = 133186870.

The previous prime is 266373739. The next prime is 266373743. The reversal of 266373742 is 247373662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 247373662 = 2 ⋅123686831.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 266373695 and 266373704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266373743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66593434 + ... + 66593437.

It is an arithmetic number, because the mean of its divisors is an integer number (99890154).

Almost surely, 2^266373742 is an apocalyptic number.

266373742 is a deficient number, since it is larger than the sum of its proper divisors (133186874).

266373742 is a wasteful number, since it uses less digits than its factorization.

266373742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133186873.

The product of its digits is 254016, while the sum is 40.

The square root of 266373742 is about 16320.9602045958. The cubic root of 266373742 is about 643.4238236754.

The spelling of 266373742 in words is "two hundred sixty-six million, three hundred seventy-three thousand, seven hundred forty-two".