4020203 has 4 divisors (see below), whose sum is σ = 4385688. Its totient is φ = 3654720.

The previous prime is 4020197. The next prime is 4020217. The reversal of 4020203 is 3020204.

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 4020203 - 2⁶ = 4020139 is a prime.

It is a super-2 number, since 2×4020203² = 32324064322418, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (11), and also a Moran number because the ratio is a prime number: 365473 = 4020203 / (4 + 0 + 2 + 0 + 2 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4020223) 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, 182726 + ... + 182747.

It is an arithmetic number, because the mean of its divisors is an integer number (1096422).

Almost surely, 2^4020203 is an apocalyptic number.

4020203 is a deficient number, since it is larger than the sum of its proper divisors (365485).

4020203 is a wasteful number, since it uses less digits than its factorization.

4020203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365484.

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 4020203 is about 2005.0443885361. The cubic root of 4020203 is about 159.0069087092.

Adding to 4020203 its reverse (3020204), we get a palindrome (7040407).

Subtracting from 4020203 its reverse (3020204), we obtain a palindrome (999999).

The spelling of 4020203 in words is "four million, twenty thousand, two hundred three".