127642247 has 8 divisors (see below), whose sum is σ = 134478000. Its totient is φ = 120818304.

The previous prime is 127642237. The next prime is 127642259. The reversal of 127642247 is 742246721.

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

It is a cyclic number.

It is not a de Polignac number, because 127642247 - 2⁴ = 127642231 is a prime.

It is a super-3 number, since 3×127642247³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127642237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27263 + ... + 31599.

It is an arithmetic number, because the mean of its divisors is an integer number (16809750).

Almost surely, 2^127642247 is an apocalyptic number.

127642247 is a deficient number, since it is larger than the sum of its proper divisors (6835753).

127642247 is a wasteful number, since it uses less digits than its factorization.

127642247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5905.

The product of its digits is 37632, while the sum is 35.

The square root of 127642247 is about 11297.8868378118. The cubic root of 127642247 is about 503.4984604576.

Adding to 127642247 its reverse (742246721), we get a palindrome (869888968).

The spelling of 127642247 in words is "one hundred twenty-seven million, six hundred forty-two thousand, two hundred forty-seven".