1200003144 has 16 divisors (see below), whose sum is σ = 3000007920. Its totient is φ = 400001040.

The previous prime is 1200003143. The next prime is 1200003221. The reversal of 1200003144 is 4413000021.

It is a hoax number, since the sum of its digits (15) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1200003143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25000042 + ... + 25000089.

It is an arithmetic number, because the mean of its divisors is an integer number (187500495).

Almost surely, 2^1200003144 is an apocalyptic number.

It is an amenable number.

1200003144 is an abundant number, since it is smaller than the sum of its proper divisors (1800004776).

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

1200003144 is a wasteful number, since it uses less digits than its factorization.

1200003144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50000140 (or 50000136 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1200003144 is about 34641.0615310790. The cubic root of 1200003144 is about 1062.6594972370.

Adding to 1200003144 its reverse (4413000021), we get a palindrome (5613003165).

The spelling of 1200003144 in words is "one billion, two hundred million, three thousand, one hundred forty-four".