202120403 has 6 divisors (see below), whose sum is σ = 208851732. Its totient is φ = 195599460.

The previous prime is 202120397. The next prime is 202120409. The reversal of 202120403 is 304021202.

It is an interprime number because it is at equal distance from previous prime (202120397) and next prime (202120409).

It is not a de Polignac number, because 202120403 - 2²⁴ = 185343187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202120409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 104201 + ... + 106122.

It is an arithmetic number, because the mean of its divisors is an integer number (34808622).

Almost surely, 2^202120403 is an apocalyptic number.

202120403 is a deficient number, since it is larger than the sum of its proper divisors (6731329).

202120403 is an equidigital number, since it uses as much as digits as its factorization.

202120403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210385 (or 210354 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 202120403 is about 14216.9055353125. The cubic root of 202120403 is about 586.8629852978.

Adding to 202120403 its reverse (304021202), we get a palindrome (506141605).

The spelling of 202120403 in words is "two hundred two million, one hundred twenty thousand, four hundred three".