1249900 has 36 divisors (see below), whose sum is σ = 2812320. Its totient is φ = 481600.

The previous prime is 1249873. The next prime is 1249901. The reversal of 1249900 is 99421.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (1249901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2685 + ... + 3115.

It is an arithmetic number, because the mean of its divisors is an integer number (78120).

2^1249900 is an apocalyptic number.

1249900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1249900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1406160).

1249900 is an abundant number, since it is smaller than the sum of its proper divisors (1562420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1249900 is a wasteful number, since it uses less digits than its factorization.

1249900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474 (or 467 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1249900 is about 1117.9892664959. The cubic root of 1249900 is about 107.7188618454.

The spelling of 1249900 in words is "one million, two hundred forty-nine thousand, nine hundred".