1203120144 has 30 divisors (see below), whose sum is σ = 3367065806. Its totient is φ = 401040000.

The previous prime is 1203120143. The next prime is 1203120161. The reversal of 1203120144 is 4410213021.

It can be written as a sum of positive squares in only one way, i.e., 798627600 + 404492544 = 28260^2 + 20112^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1203120143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4177357 + ... + 4177644.

Almost surely, 2^1203120144 is an apocalyptic number.

It is an amenable number.

1203120144 is an abundant number, since it is smaller than the sum of its proper divisors (2163945662).

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

1203120144 is a wasteful number, since it uses less digits than its factorization.

1203120144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8355015 (or 8355006 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1203120144 is about 34686.0223144713. The cubic root of 1203120144 is about 1063.5787853517.

Adding to 1203120144 its reverse (4410213021), we get a palindrome (5613333165).

The spelling of 1203120144 in words is "one billion, two hundred three million, one hundred twenty thousand, one hundred forty-four".