127423217 has 2 divisors, whose sum is σ = 127423218. Its totient is φ = 127423216.

The previous prime is 127423199. The next prime is 127423223. The reversal of 127423217 is 712324721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97436641 + 29986576 = 9871^2 + 5476^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127423217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 127423217.

It is not a weakly prime, because it can be changed into another prime (127423267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63711608 + 63711609.

It is an arithmetic number, because the mean of its divisors is an integer number (63711609).

Almost surely, 2^127423217 is an apocalyptic number.

It is an amenable number.

127423217 is a deficient number, since it is larger than the sum of its proper divisors (1).

127423217 is an equidigital number, since it uses as much as digits as its factorization.

127423217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4704, while the sum is 29.

The square root of 127423217 is about 11288.1892702063. The cubic root of 127423217 is about 503.2102998360.

Adding to 127423217 its reverse (712324721), we get a palindrome (839747938).

The spelling of 127423217 in words is "one hundred twenty-seven million, four hundred twenty-three thousand, two hundred seventeen".