127540487 has 2 divisors, whose sum is σ = 127540488. Its totient is φ = 127540486.

The previous prime is 127540429. The next prime is 127540499. The reversal of 127540487 is 784045721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 127540487 - 2¹⁰ = 127539463 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 127540487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127545487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63770243 + 63770244.

It is an arithmetic number, because the mean of its divisors is an integer number (63770244).

Almost surely, 2^127540487 is an apocalyptic number.

127540487 is a deficient number, since it is larger than the sum of its proper divisors (1).

127540487 is an equidigital number, since it uses as much as digits as its factorization.

127540487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62720, while the sum is 38.

The square root of 127540487 is about 11293.3824428291. The cubic root of 127540487 is about 503.3646238265.

The spelling of 127540487 in words is "one hundred twenty-seven million, five hundred forty thousand, four hundred eighty-seven".