1942393 has 4 divisors (see below), whose sum is σ = 1945188. Its totient is φ = 1939600.

The previous prime is 1942387. The next prime is 1942399. The reversal of 1942393 is 3932491.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3932491 = 17 ⋅231323.

It is an interprime number because it is at equal distance from previous prime (1942387) and next prime (1942399).

It can be written as a sum of positive squares in 2 ways, for example, as 660969 + 1281424 = 813^2 + 1132^2 .

It is a cyclic number.

It is not a de Polignac number, because 1942393 - 2⁵ = 1942361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1942399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555 + ... + 2047.

It is an arithmetic number, because the mean of its divisors is an integer number (486297).

2^1942393 is an apocalyptic number.

It is an amenable number.

1942393 is a deficient number, since it is larger than the sum of its proper divisors (2795).

1942393 is a wasteful number, since it uses less digits than its factorization.

1942393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2794.

The product of its digits is 5832, while the sum is 31.

The square root of 1942393 is about 1393.6975999118. The cubic root of 1942393 is about 124.7706300395.

The spelling of 1942393 in words is "one million, nine hundred forty-two thousand, three hundred ninety-three".