20142043 has 4 divisors (see below), whose sum is σ = 21017808. Its totient is φ = 19266280.

The previous prime is 20142019. The next prime is 20142047. The reversal of 20142043 is 34024102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20142043 - 2¹³ = 20133851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20142047) 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, 437848 + ... + 437893.

It is an arithmetic number, because the mean of its divisors is an integer number (5254452).

Almost surely, 2^20142043 is an apocalyptic number.

20142043 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20142043 is a deficient number, since it is larger than the sum of its proper divisors (875765).

20142043 is an equidigital number, since it uses as much as digits as its factorization.

20142043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875764.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20142043 is about 4487.9887477577. The cubic root of 20142043 is about 272.0828530398.

Adding to 20142043 its reverse (34024102), we get a palindrome (54166145).

The spelling of 20142043 in words is "twenty million, one hundred forty-two thousand, forty-three".