127540429 has 2 divisors, whose sum is σ = 127540430. Its totient is φ = 127540428.

The previous prime is 127540393. The next prime is 127540487. The reversal of 127540429 is 924045721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124657225 + 2883204 = 11165^2 + 1698^2 .

It is an emirp because it is prime and its reverse (924045721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 127540429 - 2²¹ = 125443277 is a prime.

It is a super-2 number, since 2×127540429² = 32533122059008082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 127540394 and 127540403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127540499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63770214 + 63770215.

It is an arithmetic number, because the mean of its divisors is an integer number (63770215).

Almost surely, 2^127540429 is an apocalyptic number.

It is an amenable number.

127540429 is a deficient number, since it is larger than the sum of its proper divisors (1).

127540429 is an equidigital number, since it uses as much as digits as its factorization.

127540429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 127540429 is about 11293.3798749533. The cubic root of 127540429 is about 503.3645475235.

The spelling of 127540429 in words is "one hundred twenty-seven million, five hundred forty thousand, four hundred twenty-nine".