1249212000 has 192 divisors, whose sum is σ = 4308595200. Its totient is φ = 315532800.

The previous prime is 1249211959. The next prime is 1249212011. The reversal of 1249212000 is 2129421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 225261 + ... + 230739.

It is an arithmetic number, because the mean of its divisors is an integer number (22440600).

Almost surely, 2^1249212000 is an apocalyptic number.

1249212000 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 1249212000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2154297600).

1249212000 is an abundant number, since it is smaller than the sum of its proper divisors (3059383200).

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

1249212000 is a wasteful number, since it uses less digits than its factorization.

1249212000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5526 (or 5508 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1249212000 is about 35344.1932996072. The cubic root of 1249212000 is about 1076.9909381622.

The spelling of 1249212000 in words is "one billion, two hundred forty-nine million, two hundred twelve thousand".