1259881 has 8 divisors (see below), whose sum is σ = 1448384. Its totient is φ = 1073520.

The previous prime is 1259873. The next prime is 1259899. The reversal of 1259881 is 1889521.

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

It is not a de Polignac number, because 1259881 - 2³ = 1259873 is a prime.

It is a super-2 number, since 2×1259881² = 3174600268322, which contains 22 as substring.

1259881 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1259821) 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 7 ways as a sum of consecutive naturals, for example, 1051 + ... + 1903.

It is an arithmetic number, because the mean of its divisors is an integer number (181048).

2^1259881 is an apocalyptic number.

It is an amenable number.

1259881 is a deficient number, since it is larger than the sum of its proper divisors (188503).

1259881 is an equidigital number, since it uses as much as digits as its factorization.

1259881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071.

The product of its digits is 5760, while the sum is 34.

The square root of 1259881 is about 1122.4442079676. Note that the first 3 decimals coincide. The cubic root of 1259881 is about 108.0048294594.

The spelling of 1259881 in words is "one million, two hundred fifty-nine thousand, eight hundred eighty-one".