266365042 has 4 divisors (see below), whose sum is σ = 399547566. Its totient is φ = 133182520.

The previous prime is 266365031. The next prime is 266365049. The reversal of 266365042 is 240563662.

266365042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 244265641 + 22099401 = 15629^2 + 4701^2 .

It is a super-4 number, since 4×266365042⁴ (a number of 35 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 266364989 and 266365007.

It is not an unprimeable number, because it can be changed into a prime (266365049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66591259 + ... + 66591262.

Almost surely, 2^266365042 is an apocalyptic number.

266365042 is a deficient number, since it is larger than the sum of its proper divisors (133182524).

266365042 is a wasteful number, since it uses less digits than its factorization.

266365042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133182523.

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 266365042 is about 16320.6936739833. The cubic root of 266365042 is about 643.4168186704.

The spelling of 266365042 in words is "two hundred sixty-six million, three hundred sixty-five thousand, forty-two".