20342043 has 8 divisors (see below), whose sum is σ = 30136400. Its totient is φ = 13561344.

The previous prime is 20342041. The next prime is 20342059. The reversal of 20342043 is 34024302.

20342043 is a `hidden beast` number, since 203 + 420 + 43 = 666.

It is not a de Polignac number, because 20342043 - 2¹ = 20342041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20342041) 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 7 ways as a sum of consecutive naturals, for example, 376678 + ... + 376731.

It is an arithmetic number, because the mean of its divisors is an integer number (3767050).

Almost surely, 2^20342043 is an apocalyptic number.

20342043 is a deficient number, since it is larger than the sum of its proper divisors (9794357).

20342043 is an equidigital number, since it uses as much as digits as its factorization.

20342043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753418 (or 753412 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 20342043 is about 4510.2154050555. The cubic root of 20342043 is about 272.9804357433.

Adding to 20342043 its reverse (34024302), we get a palindrome (54366345).

The spelling of 20342043 in words is "twenty million, three hundred forty-two thousand, forty-three".