1245320000 has 140 divisors (see below), whose sum is σ = 3123200256. Its totient is φ = 492480000.

The previous prime is 1245319997. The next prime is 1245320017. The reversal of 1245320000 is 235421.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6519905 + ... + 6520095.

Almost surely, 2^1245320000 is an apocalyptic number.

1245320000 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 1245320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1561600128).

1245320000 is an abundant number, since it is smaller than the sum of its proper divisors (1877880256).

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

1245320000 is an equidigital number, since it uses as much as digits as its factorization.

1245320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1245320000 is about 35289.0917990248. The cubic root of 1245320000 is about 1075.8712965005.

Adding to 1245320000 its reverse (235421), we get a palindrome (1245555421).

The spelling of 1245320000 in words is "one billion, two hundred forty-five million, three hundred twenty thousand".