1021943 has 6 divisors (see below), whose sum is σ = 1106784. Its totient is φ = 943176.

The previous prime is 1021919. The next prime is 1021961. The reversal of 1021943 is 3491201.

It is not a de Polignac number, because 1021943 - 2⁶ = 1021879 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 (1021963) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2855 + ... + 3192.

It is an arithmetic number, because the mean of its divisors is an integer number (184464).

2^1021943 is an apocalyptic number.

1021943 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1021943 is a deficient number, since it is larger than the sum of its proper divisors (84841).

1021943 is an equidigital number, since it uses as much as digits as its factorization.

1021943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6073 (or 6060 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1021943 is about 1010.9119645152. The cubic root of 1021943 is about 100.7261476660.

The spelling of 1021943 in words is "one million, twenty-one thousand, nine hundred forty-three".