1023943 has 2 divisors, whose sum is σ = 1023944. Its totient is φ = 1023942.

The previous prime is 1023941. The next prime is 1023947. The reversal of 1023943 is 3493201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1023943 - 2¹ = 1023941 is a prime.

Together with 1023941, it forms a pair of twin primes.

1023943 is a lucky number.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511971 + 511972.

It is an arithmetic number, because the mean of its divisors is an integer number (511972).

2^1023943 is an apocalyptic number.

1023943 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023943 is an equidigital number, since it uses as much as digits as its factorization.

1023943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 1023943 is about 1011.9006868265. The cubic root of 1023943 is about 100.7918137616.

The spelling of 1023943 in words is "one million, twenty-three thousand, nine hundred forty-three".