127487421 has 6 divisors (see below), whose sum is σ = 184148510. Its totient is φ = 84991608.

The previous prime is 127487411. The next prime is 127487429. The reversal of 127487421 is 124784721.

It can be written as a sum of positive squares in only one way, i.e., 123543225 + 3944196 = 11115^2 + 1986^2 .

It is not a de Polignac number, because 127487421 - 2⁶ = 127487357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127487429) 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 in 5 ways as a sum of consecutive naturals, for example, 7082626 + ... + 7082643.

Almost surely, 2^127487421 is an apocalyptic number.

It is an amenable number.

127487421 is a deficient number, since it is larger than the sum of its proper divisors (56661089).

127487421 is a wasteful number, since it uses less digits than its factorization.

127487421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14165275 (or 14165272 counting only the distinct ones).

The product of its digits is 25088, while the sum is 36.

The square root of 127487421 is about 11291.0327694149. The cubic root of 127487421 is about 503.2948022003.

The spelling of 127487421 in words is "one hundred twenty-seven million, four hundred eighty-seven thousand, four hundred twenty-one".