1020773043 has 16 divisors (see below), whose sum is σ = 1591849600. Its totient is φ = 644698440.

The previous prime is 1020773027. The next prime is 1020773071. The reversal of 1020773043 is 3403770201.

It is not a de Polignac number, because 1020773043 - 2⁴ = 1020773027 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020772998 and 1020773016.

It is not an unprimeable number, because it can be changed into a prime (1020773443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 994393 + ... + 995418.

It is an arithmetic number, because the mean of its divisors is an integer number (99490600).

Almost surely, 2^1020773043 is an apocalyptic number.

1020773043 is a deficient number, since it is larger than the sum of its proper divisors (571076557).

1020773043 is a wasteful number, since it uses less digits than its factorization.

1020773043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1989839 (or 1989833 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 1020773043 is about 31949.5390107588. The cubic root of 1020773043 is about 1006.8769468595.

The spelling of 1020773043 in words is "one billion, twenty million, seven hundred seventy-three thousand, forty-three".