127423221 has 4 divisors (see below), whose sum is σ = 169897632. Its totient is φ = 84948812.

The previous prime is 127423217. The next prime is 127423223. The reversal of 127423221 is 122324721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 127423221 - 2² = 127423217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 127423191 and 127423200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127423223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21237201 + ... + 21237206.

It is an arithmetic number, because the mean of its divisors is an integer number (42474408).

Almost surely, 2^127423221 is an apocalyptic number.

It is an amenable number.

127423221 is a deficient number, since it is larger than the sum of its proper divisors (42474411).

127423221 is an equidigital number, since it uses as much as digits as its factorization.

127423221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42474410.

The product of its digits is 1344, while the sum is 24.

The square root of 127423221 is about 11288.1894473826. The cubic root of 127423221 is about 503.2103051015.

Adding to 127423221 its reverse (122324721), we get a palindrome (249747942).

The spelling of 127423221 in words is "one hundred twenty-seven million, four hundred twenty-three thousand, two hundred twenty-one".