127387481 has 8 divisors (see below), whose sum is σ = 138602184. Its totient is φ = 116375040.

The previous prime is 127387471. The next prime is 127387493. The reversal of 127387481 is 184783721.

It can be written as a sum of positive squares in 4 ways, for example, as 3822025 + 123565456 = 1955^2 + 11116^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127387481 is a prime.

It is a super-2 number, since 2×127387481² = 32455140631050722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127387441) 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 7 ways as a sum of consecutive naturals, for example, 49250 + ... + 51771.

It is an arithmetic number, because the mean of its divisors is an integer number (17325273).

Almost surely, 2^127387481 is an apocalyptic number.

It is an amenable number.

127387481 is a deficient number, since it is larger than the sum of its proper divisors (11214703).

127387481 is a wasteful number, since it uses less digits than its factorization.

127387481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101131.

The product of its digits is 75264, while the sum is 41.

The square root of 127387481 is about 11286.6062658356. The cubic root of 127387481 is about 503.1632534524.

The spelling of 127387481 in words is "one hundred twenty-seven million, three hundred eighty-seven thousand, four hundred eighty-one".