1291852 has 6 divisors (see below), whose sum is σ = 2260748. Its totient is φ = 645924.

The previous prime is 1291831. The next prime is 1291861. The reversal of 1291852 is 2581921.

It is a self number, because there is not a number n which added to its sum of digits gives 1291852.

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 as a sum of consecutive naturals, namely, 161478 + ... + 161485.

2^1291852 is an apocalyptic number.

It is an amenable number.

1291852 is a deficient number, since it is larger than the sum of its proper divisors (968896).

1291852 is a wasteful number, since it uses less digits than its factorization.

1291852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322967 (or 322965 counting only the distinct ones).

The product of its digits is 1440, while the sum is 28.

The square root of 1291852 is about 1136.5966742869. The cubic root of 1291852 is about 108.9107931006.

The spelling of 1291852 in words is "one million, two hundred ninety-one thousand, eight hundred fifty-two".