203414442421 has 16 divisors (see below), whose sum is σ = 210665871360. Its totient is φ = 196256934720.

The previous prime is 203414442401. The next prime is 203414442431. The reversal of 203414442421 is 124244414302.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 203414442421 - 2⁵ = 203414442389 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 (203414442401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10050450 + ... + 10070668.

It is an arithmetic number, because the mean of its divisors is an integer number (13166616960).

Almost surely, 2^203414442421 is an apocalyptic number.

It is an amenable number.

203414442421 is a deficient number, since it is larger than the sum of its proper divisors (7251428939).

203414442421 is a wasteful number, since it uses less digits than its factorization.

203414442421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22524.

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 203414442421 its reverse (124244414302), we get a palindrome (327658856723).

The spelling of 203414442421 in words is "two hundred three billion, four hundred fourteen million, four hundred forty-two thousand, four hundred twenty-one".