127440329 has 2 divisors, whose sum is σ = 127440330. Its totient is φ = 127440328.

The previous prime is 127440323. The next prime is 127440331. The reversal of 127440329 is 923044721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84143929 + 43296400 = 9173^2 + 6580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127440329 is a prime.

Together with 127440331, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 127440295 and 127440304.

It is not a weakly prime, because it can be changed into another prime (127440323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63720164 + 63720165.

It is an arithmetic number, because the mean of its divisors is an integer number (63720165).

Almost surely, 2^127440329 is an apocalyptic number.

It is an amenable number.

127440329 is a deficient number, since it is larger than the sum of its proper divisors (1).

127440329 is an equidigital number, since it uses as much as digits as its factorization.

127440329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 127440329 is about 11288.9472051206. The cubic root of 127440329 is about 503.2328246407.

The spelling of 127440329 in words is "one hundred twenty-seven million, four hundred forty thousand, three hundred twenty-nine".