1142187200 has 336 divisors, whose sum is σ = 3579961344. Its totient is φ = 348364800.

The previous prime is 1142187197. The next prime is 1142187209. The reversal of 1142187200 is 27812411.

It is a self number, because there is not a number n which added to its sum of digits gives 1142187200.

It is not an unprimeable number, because it can be changed into a prime (1142187209) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8993537 + ... + 8993663.

Almost surely, 2^1142187200 is an apocalyptic number.

1142187200 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 1142187200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1789980672).

1142187200 is an abundant number, since it is smaller than the sum of its proper divisors (2437774144).

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

1142187200 is a wasteful number, since it uses less digits than its factorization.

1142187200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 1142187200 is about 33796.2601481288. The cubic root of 1142187200 is about 1045.3115834072.

Adding to 1142187200 its reverse (27812411), we get a palindrome (1169999611).

The spelling of 1142187200 in words is "one billion, one hundred forty-two million, one hundred eighty-seven thousand, two hundred".