127422397 has 2 divisors, whose sum is σ = 127422398. Its totient is φ = 127422396.

The previous prime is 127422391. The next prime is 127422419. The reversal of 127422397 is 793224721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124970041 + 2452356 = 11179^2 + 1566^2 .

It is a cyclic number.

It is not a de Polignac number, because 127422397 - 2³ = 127422389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127422391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63711198 + 63711199.

It is an arithmetic number, because the mean of its divisors is an integer number (63711199).

Almost surely, 2^127422397 is an apocalyptic number.

It is an amenable number.

127422397 is a deficient number, since it is larger than the sum of its proper divisors (1).

127422397 is an equidigital number, since it uses as much as digits as its factorization.

127422397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 37.

The square root of 127422397 is about 11288.1529489992. The cubic root of 127422397 is about 503.2092204060.

The spelling of 127422397 in words is "one hundred twenty-seven million, four hundred twenty-two thousand, three hundred ninety-seven".