127320437 has 2 divisors, whose sum is σ = 127320438. Its totient is φ = 127320436.

The previous prime is 127320383. The next prime is 127320439. The reversal of 127320437 is 734023721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73942801 + 53377636 = 8599^2 + 7306^2 .

It is an emirp because it is prime and its reverse (734023721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 127320437 - 2⁸ = 127320181 is a prime.

Together with 127320439, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127320439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63660218 + 63660219.

It is an arithmetic number, because the mean of its divisors is an integer number (63660219).

Almost surely, 2^127320437 is an apocalyptic number.

It is an amenable number.

127320437 is a deficient number, since it is larger than the sum of its proper divisors (1).

127320437 is an equidigital number, since it uses as much as digits as its factorization.

127320437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 127320437 is about 11283.6358058916. The cubic root of 127320437 is about 503.0749663965.

The spelling of 127320437 in words is "one hundred twenty-seven million, three hundred twenty thousand, four hundred thirty-seven".