127642245 has 8 divisors (see below), whose sum is σ = 204227616. Its totient is φ = 68075856.

The previous prime is 127642237. The next prime is 127642259. The reversal of 127642245 is 542246721.

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

It is not a de Polignac number, because 127642245 - 2³ = 127642237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4254727 + ... + 4254756.

It is an arithmetic number, because the mean of its divisors is an integer number (25528452).

Almost surely, 2^127642245 is an apocalyptic number.

127642245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

127642245 is a deficient number, since it is larger than the sum of its proper divisors (76585371).

127642245 is an equidigital number, since it uses as much as digits as its factorization.

127642245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8509491.

The product of its digits is 26880, while the sum is 33.

The square root of 127642245 is about 11297.8867492996. The cubic root of 127642245 is about 503.4984578279.

Adding to 127642245 its reverse (542246721), we get a palindrome (669888966).

The spelling of 127642245 in words is "one hundred twenty-seven million, six hundred forty-two thousand, two hundred forty-five".