203420541 has 4 divisors (see below), whose sum is σ = 271227392. Its totient is φ = 135613692.

The previous prime is 203420537. The next prime is 203420549. The reversal of 203420541 is 145024302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 203420541 - 2² = 203420537 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203420549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33903421 + ... + 33903426.

It is an arithmetic number, because the mean of its divisors is an integer number (67806848).

Almost surely, 2^203420541 is an apocalyptic number.

It is an amenable number.

203420541 is a deficient number, since it is larger than the sum of its proper divisors (67806851).

203420541 is an equidigital number, since it uses as much as digits as its factorization.

203420541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67806850.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 203420541 is about 14262.5573092626. The cubic root of 203420541 is about 588.1186274377.

Adding to 203420541 its reverse (145024302), we get a palindrome (348444843).

The spelling of 203420541 in words is "two hundred three million, four hundred twenty thousand, five hundred forty-one".