1291041 has 12 divisors (see below), whose sum is σ = 1915732. Its totient is φ = 837216.

The previous prime is 1291021. The next prime is 1291063. The reversal of 1291041 is 1401921.

It can be written as a sum of positive squares in 2 ways, for example, as 772641 + 518400 = 879^2 + 720^2 .

It is not a de Polignac number, because 1291041 - 2⁵ = 1291009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1291001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1606 + ... + 2271.

2^1291041 is an apocalyptic number.

It is an amenable number.

1291041 is a deficient number, since it is larger than the sum of its proper divisors (624691).

1291041 is a wasteful number, since it uses less digits than its factorization.

1291041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3920 (or 3917 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 1291041 is about 1136.2398514398. The cubic root of 1291041 is about 108.8879976249.

Adding to 1291041 its reverse (1401921), we get a palindrome (2692962).

The spelling of 1291041 in words is "one million, two hundred ninety-one thousand, forty-one".