1256906 has 8 divisors (see below), whose sum is σ = 2154720. Its totient is φ = 538668.

The previous prime is 1256903. The next prime is 1256911. The reversal of 1256906 is 6096521.

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

It is a pancake number, because a pancake can be divided into 1256906 parts by 1585 straight cuts.

It is not an unprimeable number, because it can be changed into a prime (1256903) by changing a digit.

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, 44876 + ... + 44903.

It is an arithmetic number, because the mean of its divisors is an integer number (269340).

2^1256906 is an apocalyptic number.

1256906 is a deficient number, since it is larger than the sum of its proper divisors (897814).

1256906 is an equidigital number, since it uses as much as digits as its factorization.

1256906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89788.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 1256906 is about 1121.1181918067. The cubic root of 1256906 is about 107.9197506278.

The spelling of 1256906 in words is "one million, two hundred fifty-six thousand, nine hundred six".