1291148 has 12 divisors (see below), whose sum is σ = 2287320. Its totient is φ = 637632.

The previous prime is 1291139. The next prime is 1291153. The reversal of 1291148 is 8411921.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1613 + ... + 2276.

It is an arithmetic number, because the mean of its divisors is an integer number (190610).

2^1291148 is an apocalyptic number.

It is an amenable number.

1291148 is a deficient number, since it is larger than the sum of its proper divisors (996172).

1291148 is a wasteful number, since it uses less digits than its factorization.

1291148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3976 (or 3974 counting only the distinct ones).

The product of its digits is 576, while the sum is 26.

The square root of 1291148 is about 1136.2869355933. The cubic root of 1291148 is about 108.8910057126.

The spelling of 1291148 in words is "one million, two hundred ninety-one thousand, one hundred forty-eight".