1249870 has 8 divisors (see below), whose sum is σ = 2249784. Its totient is φ = 499944.

The previous prime is 1249861. The next prime is 1249873. The reversal of 1249870 is 789421.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62484 + ... + 62503.

It is an arithmetic number, because the mean of its divisors is an integer number (281223).

2^1249870 is an apocalyptic number.

1249870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1249870 is a deficient number, since it is larger than the sum of its proper divisors (999914).

1249870 is a wasteful number, since it uses less digits than its factorization.

1249870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124994.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1249870 is about 1117.9758494708. The cubic root of 1249870 is about 107.7180000187.

The spelling of 1249870 in words is "one million, two hundred forty-nine thousand, eight hundred seventy".