1201143600 has 120 divisors (see below), whose sum is σ = 4275219920. Its totient is φ = 320302080.

The previous prime is 1201143599. The next prime is 1201143649. The reversal of 1201143600 is 63411021.

It is a happy number.

1201143600 is a `hidden beast` number, since 1 + 20 + 1 + 1 + 43 + 600 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44809 + ... + 66408.

Almost surely, 2^1201143600 is an apocalyptic number.

1201143600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201143600 is an abundant number, since it is smaller than the sum of its proper divisors (3074076320).

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

1201143600 is a wasteful number, since it uses less digits than its factorization.

1201143600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111244 (or 111227 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1201143600 is about 34657.5186647861. The cubic root of 1201143600 is about 1062.9960332097.

Adding to 1201143600 its reverse (63411021), we get a palindrome (1264554621).

It can be divided in two parts, 12011 and 43600, that added together give a triangular number (55611 = T₃₃₃).

The spelling of 1201143600 in words is "one billion, two hundred one million, one hundred forty-three thousand, six hundred".