1245112000 has 112 divisors (see below), whose sum is σ = 3364077600. Its totient is φ = 452736000.

The previous prime is 1245111991. The next prime is 1245112051. The reversal of 1245112000 is 2115421.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80926 + ... + 95074.

Almost surely, 2^1245112000 is an apocalyptic number.

1245112000 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 1245112000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1682038800).

1245112000 is an abundant number, since it is smaller than the sum of its proper divisors (2118965600).

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

1245112000 is a wasteful number, since it uses less digits than its factorization.

1245112000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14187 (or 14167 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1245112000 is about 35286.1445896261. The cubic root of 1245112000 is about 1075.8113939079.

Adding to 1245112000 its reverse (2115421), we get a palindrome (1247227421).

The spelling of 1245112000 in words is "one billion, two hundred forty-five million, one hundred twelve thousand".