1943423 has 4 divisors (see below), whose sum is σ = 2057760. Its totient is φ = 1829088.

The previous prime is 1943419. The next prime is 1943429. The reversal of 1943423 is 3243491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3243491 = 107 ⋅30313.

It is a cyclic number.

It is not a de Polignac number, because 1943423 - 2² = 1943419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1943392 and 1943401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1943429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57143 + ... + 57176.

It is an arithmetic number, because the mean of its divisors is an integer number (514440).

2^1943423 is an apocalyptic number.

1943423 is a deficient number, since it is larger than the sum of its proper divisors (114337).

1943423 is a wasteful number, since it uses less digits than its factorization.

1943423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114336.

The product of its digits is 2592, while the sum is 26.

The square root of 1943423 is about 1394.0670715572. The cubic root of 1943423 is about 124.7926803386.

The spelling of 1943423 in words is "one million, nine hundred forty-three thousand, four hundred twenty-three".