1200054144 has 64 divisors (see below), whose sum is σ = 3290503680. Its totient is φ = 387110400.

The previous prime is 1200054131. The next prime is 1200054173. The reversal of 1200054144 is 4414500021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 1200054144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38502 + ... + 62309.

It is an arithmetic number, because the mean of its divisors is an integer number (51414120).

Almost surely, 2^1200054144 is an apocalyptic number.

It is an amenable number.

1200054144 is an abundant number, since it is smaller than the sum of its proper divisors (2090449536).

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

1200054144 is a wasteful number, since it uses less digits than its factorization.

1200054144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100859 (or 100847 counting only the distinct ones).

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

The square root of 1200054144 is about 34641.7976438868. The cubic root of 1200054144 is about 1062.6745513271.

Adding to 1200054144 its reverse (4414500021), we get a palindrome (5614554165).

The spelling of 1200054144 in words is "one billion, two hundred million, fifty-four thousand, one hundred forty-four".