273135421 has 8 divisors (see below), whose sum is σ = 294280280. Its totient is φ = 252009792.

The previous prime is 273135407. The next prime is 273135449. The reversal of 273135421 is 124531372.

It can be written as a sum of positive squares in 4 ways, for example, as 72488196 + 200647225 = 8514^2 + 14165^2 .

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 273135421 - 2¹⁷ = 273004349 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 273135421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (273135521) 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, 40735 + ... + 46963.

It is an arithmetic number, because the mean of its divisors is an integer number (36785035).

Almost surely, 2^273135421 is an apocalyptic number.

It is an amenable number.

273135421 is a deficient number, since it is larger than the sum of its proper divisors (21144859).

273135421 is a wasteful number, since it uses less digits than its factorization.

273135421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9615.

The product of its digits is 5040, while the sum is 28.

The square root of 273135421 is about 16526.8091596654. The cubic root of 273135421 is about 648.8226585189.

Adding to 273135421 its reverse (124531372), we get a palindrome (397666793).

The spelling of 273135421 in words is "two hundred seventy-three million, one hundred thirty-five thousand, four hundred twenty-one".