127421 has 8 divisors (see below), whose sum is σ = 147840. Its totient is φ = 107568.

The previous prime is 127403. The next prime is 127423. The reversal of 127421 is 124721.

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 127421 - 2¹⁰ = 126397 is a prime.

It is a super-2 number, since 2×127421² = 32472222482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 127421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127423) 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, 680 + ... + 846.

It is an arithmetic number, because the mean of its divisors is an integer number (18480).

2¹²⁷⁴²¹ is an apocalyptic number.

It is an amenable number.

127421 is a deficient number, since it is larger than the sum of its proper divisors (20419).

127421 is a wasteful number, since it uses less digits than its factorization.

127421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283.

The product of its digits is 112, while the sum is 17.

The square root of 127421 is about 356.9607821596. The cubic root of 127421 is about 50.3207381415.

The spelling of 127421 in words is "one hundred twenty-seven thousand, four hundred twenty-one", and thus it is an iban number.