203124421 has 8 divisors (see below), whose sum is σ = 214174080. Its totient is φ = 192110688.

The previous prime is 203124409. The next prime is 203124451. The reversal of 203124421 is 124421302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 203124421 - 2¹³ = 203116229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203124451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3060 + ... + 20386.

It is an arithmetic number, because the mean of its divisors is an integer number (26771760).

Almost surely, 2^203124421 is an apocalyptic number.

It is an amenable number.

203124421 is a deficient number, since it is larger than the sum of its proper divisors (11049659).

203124421 is a wasteful number, since it uses less digits than its factorization.

203124421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17963.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 203124421 is about 14252.1725010610. The cubic root of 203124421 is about 587.8331133972.

Adding to 203124421 its reverse (124421302), we get a palindrome (327545723).

The spelling of 203124421 in words is "two hundred three million, one hundred twenty-four thousand, four hundred twenty-one".