1020771 has 12 divisors (see below), whose sum is σ = 1525680. Its totient is φ = 656880.

The previous prime is 1020757. The next prime is 1020779. The reversal of 1020771 is 1770201.

It is not a de Polignac number, because 1020771 - 2⁶ = 1020707 is a prime.

1020771 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1020779) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1695 + ... + 2216.

It is an arithmetic number, because the mean of its divisors is an integer number (127140).

2^1020771 is an apocalyptic number.

1020771 is a deficient number, since it is larger than the sum of its proper divisors (504909).

1020771 is a wasteful number, since it uses less digits than its factorization.

1020771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3946 (or 3943 counting only the distinct ones).

The product of its (nonzero) digits is 98, while the sum is 18.

The square root of 1020771 is about 1010.3321236108. The cubic root of 1020771 is about 100.6876275130.

Adding to 1020771 its reverse (1770201), we get a palindrome (2790972).

The spelling of 1020771 in words is "one million, twenty thousand, seven hundred seventy-one".