20042203 has 4 divisors (see below), whose sum is σ = 20147328. Its totient is φ = 19937080.

The previous prime is 20042173. The next prime is 20042249. The reversal of 20042203 is 30224002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30224002 = 2 ⋅15112001.

It is a cyclic number.

It is not a de Polignac number, because 20042203 - 2¹³ = 20034011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20042263) 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, 52276 + ... + 52657.

It is an arithmetic number, because the mean of its divisors is an integer number (5036832).

Almost surely, 2^20042203 is an apocalyptic number.

20042203 is a deficient number, since it is larger than the sum of its proper divisors (105125).

20042203 is a wasteful number, since it uses less digits than its factorization.

20042203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105124.

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 20042203 is about 4476.8519073117. The cubic root of 20042203 is about 271.6325551325.

Adding to 20042203 its reverse (30224002), we get a palindrome (50266205).

The spelling of 20042203 in words is "twenty million, forty-two thousand, two hundred three".