1940043 has 8 divisors (see below), whose sum is σ = 2956288. Its totient is φ = 1108584.

The previous prime is 1940041. The next prime is 1940047. The reversal of 1940043 is 3400491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1940043 - 2¹ = 1940041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 92383 = 1940043 / (1 + 9 + 4 + 0 + 0 + 4 + 3).

It is a Duffinian number.

1940043 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1940041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46171 + ... + 46212.

It is an arithmetic number, because the mean of its divisors is an integer number (369536).

2^1940043 is an apocalyptic number.

1940043 is a deficient number, since it is larger than the sum of its proper divisors (1016245).

1940043 is an equidigital number, since it uses as much as digits as its factorization.

1940043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92393.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1940043 is about 1392.8542637333. The cubic root of 1940043 is about 124.7202919072.

The spelling of 1940043 in words is "one million, nine hundred forty thousand, forty-three".