1266541 has 8 divisors (see below), whose sum is σ = 1347840. Its totient is φ = 1187472.

The previous prime is 1266539. The next prime is 1266557. The reversal of 1266541 is 1456621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1266541 - 2¹ = 1266539 is a prime.

It is a super-2 number, since 2×1266541² = 3208252209362, which contains 22 as substring.

It is a Duffinian number.

1266541 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266511) 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, 700 + ... + 1738.

It is an arithmetic number, because the mean of its divisors is an integer number (168480).

2^1266541 is an apocalyptic number.

It is an amenable number.

1266541 is a deficient number, since it is larger than the sum of its proper divisors (81299).

1266541 is a wasteful number, since it uses less digits than its factorization.

1266541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115.

The product of its digits is 1440, while the sum is 25.

The square root of 1266541 is about 1125.4070374758. The cubic root of 1266541 is about 108.1948072944.

The spelling of 1266541 in words is "one million, two hundred sixty-six thousand, five hundred forty-one".