1249881 has 8 divisors (see below), whose sum is σ = 1705440. Its totient is φ = 813792.

The previous prime is 1249873. The next prime is 1249901. The reversal of 1249881 is 1889421.

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

It is not a de Polignac number, because 1249881 - 2³ = 1249873 is a prime.

It is a super-2 number, since 2×1249881² = 3124405028322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1249811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4716 + ... + 4973.

It is an arithmetic number, because the mean of its divisors is an integer number (213180).

2^1249881 is an apocalyptic number.

It is an amenable number.

1249881 is a deficient number, since it is larger than the sum of its proper divisors (455559).

1249881 is an equidigital number, since it uses as much as digits as its factorization.

1249881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9735.

The product of its digits is 4608, while the sum is 33.

The square root of 1249881 is about 1117.9807690654. The cubic root of 1249881 is about 107.7183160234.

The spelling of 1249881 in words is "one million, two hundred forty-nine thousand, eight hundred eighty-one".