1020143144 has 8 divisors (see below), whose sum is σ = 1912768410. Its totient is φ = 510071568.

The previous prime is 1020143141. The next prime is 1020143149. The reversal of 1020143144 is 4413410201.

It can be written as a sum of positive squares in only one way, i.e., 831630244 + 188512900 = 28838^2 + 13730^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1020143141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63758939 + ... + 63758954.

Almost surely, 2^1020143144 is an apocalyptic number.

It is an amenable number.

1020143144 is a deficient number, since it is larger than the sum of its proper divisors (892625266).

1020143144 is a wasteful number, since it uses less digits than its factorization.

1020143144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127517899 (or 127517895 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1020143144 is about 31939.6797729721. The cubic root of 1020143144 is about 1006.6697962468.

Adding to 1020143144 its reverse (4413410201), we get a palindrome (5433553345).

The spelling of 1020143144 in words is "one billion, twenty million, one hundred forty-three thousand, one hundred forty-four".