1020061143 has 12 divisors (see below), whose sum is σ = 1480407448. Its totient is φ = 676816560.

The previous prime is 1020061139. The next prime is 1020061153. The reversal of 1020061143 is 3411600201.

It is a happy number.

1020061143 is a `hidden beast` number, since 10 + 2 + 0 + 0 + 611 + 43 = 666.

It is not a de Polignac number, because 1020061143 - 2² = 1020061139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020061123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 266680 + ... + 270477.

Almost surely, 2^1020061143 is an apocalyptic number.

1020061143 is a deficient number, since it is larger than the sum of its proper divisors (460346305).

1020061143 is a wasteful number, since it uses less digits than its factorization.

1020061143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537374 (or 537371 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1020061143 is about 31938.3960617937. The cubic root of 1020061143 is about 1006.6428228616.

Adding to 1020061143 its reverse (3411600201), we get a palindrome (4431661344).

The spelling of 1020061143 in words is "one billion, twenty million, sixty-one thousand, one hundred forty-three".