272403421 has 8 divisors (see below), whose sum is σ = 284431680. Its totient is φ = 260390592.

The previous prime is 272403403. The next prime is 272403463. The reversal of 272403421 is 124304272.

It is a happy number.

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 272403421 - 2²³ = 264014813 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 (272400421) 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, 46186 + ... + 51748.

It is an arithmetic number, because the mean of its divisors is an integer number (35553960).

Almost surely, 2^272403421 is an apocalyptic number.

It is an amenable number.

272403421 is a deficient number, since it is larger than the sum of its proper divisors (12028259).

272403421 is a wasteful number, since it uses less digits than its factorization.

272403421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7715.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 272403421 is about 16504.6484664170. The cubic root of 272403421 is about 648.2425273718.

Adding to 272403421 its reverse (124304272), we get a palindrome (396707693).

The spelling of 272403421 in words is "two hundred seventy-two million, four hundred three thousand, four hundred twenty-one".