127146209 has 2 divisors, whose sum is σ = 127146210. Its totient is φ = 127146208.

The previous prime is 127146197. The next prime is 127146241. The reversal of 127146209 is 902641721.

It is a happy number.

It is an a-pointer prime, because the next prime (127146241) can be obtained adding 127146209 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95257600 + 31888609 = 9760^2 + 5647^2 .

It is a cyclic number.

It is not a de Polignac number, because 127146209 - 2⁴ = 127146193 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (127146259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63573104 + 63573105.

It is an arithmetic number, because the mean of its divisors is an integer number (63573105).

Almost surely, 2^127146209 is an apocalyptic number.

It is an amenable number.

127146209 is a deficient number, since it is larger than the sum of its proper divisors (1).

127146209 is an equidigital number, since it uses as much as digits as its factorization.

127146209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 127146209 is about 11275.9127790170. The cubic root of 127146209 is about 502.8453888091.

The spelling of 127146209 in words is "one hundred twenty-seven million, one hundred forty-six thousand, two hundred nine".