1249097000 has 64 divisors (see below), whose sum is σ = 2970948240. Its totient is φ = 491424000.

The previous prime is 1249096999. The next prime is 1249097009. The reversal of 1249097000 is 7909421.

It can be written as a sum of positive squares in 8 ways, for example, as 1170724 + 1247926276 = 1082^2 + 35326^2 .

It is not an unprimeable number, because it can be changed into a prime (1249097009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50762 + ... + 71238.

Almost surely, 2^1249097000 is an apocalyptic number.

1249097000 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 1249097000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1485474120).

1249097000 is an abundant number, since it is smaller than the sum of its proper divisors (1721851240).

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

1249097000 is a wasteful number, since it uses less digits than its factorization.

1249097000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20559 (or 20545 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 1249097000 is about 35342.5664037008. The cubic root of 1249097000 is about 1076.9578885921.

The spelling of 1249097000 in words is "one billion, two hundred forty-nine million, ninety-seven thousand".