1020403144 has 8 divisors (see below), whose sum is σ = 1913255910. Its totient is φ = 510201568.

The previous prime is 1020403127. The next prime is 1020403183. The reversal of 1020403144 is 4413040201.

1020403144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 631919044 + 388484100 = 25138^2 + 19710^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63775189 + ... + 63775204.

Almost surely, 2^1020403144 is an apocalyptic number.

It is an amenable number.

1020403144 is a deficient number, since it is larger than the sum of its proper divisors (892852766).

1020403144 is a wasteful number, since it uses less digits than its factorization.

1020403144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127550399 (or 127550395 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1020403144 is about 31943.7496859714. The cubic root of 1020403144 is about 1006.7553110153.

Adding to 1020403144 its reverse (4413040201), we get a palindrome (5433443345).

The spelling of 1020403144 in words is "one billion, twenty million, four hundred three thousand, one hundred forty-four".