202504421 has 8 divisors (see below), whose sum is σ = 233256960. Its totient is φ = 172207728.

The previous prime is 202504417. The next prime is 202504457. The reversal of 202504421 is 124405202.

It is a happy number.

202504421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 202504421 - 2² = 202504417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202504393 and 202504402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202504411) 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, 113006 + ... + 114783.

It is an arithmetic number, because the mean of its divisors is an integer number (29157120).

Almost surely, 2^202504421 is an apocalyptic number.

It is an amenable number.

202504421 is a deficient number, since it is larger than the sum of its proper divisors (30752539).

202504421 is a wasteful number, since it uses less digits than its factorization.

202504421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227923.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 202504421 is about 14230.4048080158. The cubic root of 202504421 is about 587.2344196331.

Adding to 202504421 its reverse (124405202), we get a palindrome (326909623).

The spelling of 202504421 in words is "two hundred two million, five hundred four thousand, four hundred twenty-one".