266542041 has 4 divisors (see below), whose sum is σ = 355389392. Its totient is φ = 177694692.

The previous prime is 266542033. The next prime is 266542049. The reversal of 266542041 is 140245662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (266542033) and next prime (266542049).

It is not a de Polignac number, because 266542041 - 2³ = 266542033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266542049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44423671 + ... + 44423676.

It is an arithmetic number, because the mean of its divisors is an integer number (88847348).

Almost surely, 2^266542041 is an apocalyptic number.

It is an amenable number.

266542041 is a deficient number, since it is larger than the sum of its proper divisors (88847351).

266542041 is an equidigital number, since it uses as much as digits as its factorization.

266542041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88847350.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 266542041 is about 16326.1153064653. The cubic root of 266542041 is about 643.5593034808.

The spelling of 266542041 in words is "two hundred sixty-six million, five hundred forty-two thousand, forty-one".