127667245 has 4 divisors (see below), whose sum is σ = 153200700. Its totient is φ = 102133792.

The previous prime is 127667233. The next prime is 127667249. The reversal of 127667245 is 542766721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542766721 = 7 ⋅77538103.

It can be written as a sum of positive squares in 2 ways, for example, as 70241161 + 57426084 = 8381^2 + 7578^2 .

It is a cyclic number.

It is not a de Polignac number, because 127667245 - 2⁷ = 127667117 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 127667198 and 127667207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127667249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12766720 + ... + 12766729.

It is an arithmetic number, because the mean of its divisors is an integer number (38300175).

Almost surely, 2^127667245 is an apocalyptic number.

It is an amenable number.

127667245 is a deficient number, since it is larger than the sum of its proper divisors (25533455).

127667245 is an equidigital number, since it uses as much as digits as its factorization.

127667245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25533454.

The product of its digits is 141120, while the sum is 40.

The square root of 127667245 is about 11298.9930967321. The cubic root of 127667245 is about 503.5313274047.

The spelling of 127667245 in words is "one hundred twenty-seven million, six hundred sixty-seven thousand, two hundred forty-five".