1200522144 has 96 divisors (see below), whose sum is σ = 3326400000. Its totient is φ = 378065664.

The previous prime is 1200522083. The next prime is 1200522181. The reversal of 1200522144 is 4412250021.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 1200522144.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 909517 + ... + 910835.

It is an arithmetic number, because the mean of its divisors is an integer number (34650000).

Almost surely, 2^1200522144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200522144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1663200000).

1200522144 is an abundant number, since it is smaller than the sum of its proper divisors (2125877856).

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

1200522144 is a wasteful number, since it uses less digits than its factorization.

1200522144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1850 (or 1842 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1200522144 is about 34648.5518312093. The cubic root of 1200522144 is about 1062.8126748322.

Adding to 1200522144 its reverse (4412250021), we get a palindrome (5612772165).

The spelling of 1200522144 in words is "one billion, two hundred million, five hundred twenty-two thousand, one hundred forty-four".