127986243 has 32 divisors (see below), whose sum is σ = 214172160. Its totient is φ = 66044160.

The previous prime is 127986239. The next prime is 127986269. The reversal of 127986243 is 342689721.

It is not a de Polignac number, because 127986243 - 2² = 127986239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 127986195 and 127986204.

It is not an unprimeable number, because it can be changed into a prime (127987243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34503 + ... + 38031.

It is an arithmetic number, because the mean of its divisors is an integer number (6692880).

Almost surely, 2^127986243 is an apocalyptic number.

127986243 is a deficient number, since it is larger than the sum of its proper divisors (86185917).

127986243 is a wasteful number, since it uses less digits than its factorization.

127986243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3707.

The product of its digits is 145152, while the sum is 42.

The square root of 127986243 is about 11313.1005033987. The cubic root of 127986243 is about 503.9503643800.

The spelling of 127986243 in words is "one hundred twenty-seven million, nine hundred eighty-six thousand, two hundred forty-three".