1405943 has 24 divisors (see below), whose sum is σ = 1906560. Its totient is φ = 1004400.

The previous prime is 1405939. The next prime is 1405979. The reversal of 1405943 is 3495041.

It is not a de Polignac number, because 1405943 - 2² = 1405939 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 (1405343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45338 + ... + 45368.

It is an arithmetic number, because the mean of its divisors is an integer number (79440).

2^1405943 is an apocalyptic number.

1405943 is a deficient number, since it is larger than the sum of its proper divisors (500617).

1405943 is a wasteful number, since it uses less digits than its factorization.

1405943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1405943 is about 1185.7246729321. The cubic root of 1405943 is about 112.0269652335.

The spelling of 1405943 in words is "one million, four hundred five thousand, nine hundred forty-three".