20127049 has 8 divisors (see below), whose sum is σ = 20494152. Its totient is φ = 19762560.

The previous prime is 20127043. The next prime is 20127109. The reversal of 20127049 is 94072102.

It can be written as a sum of positive squares in 4 ways, for example, as 9610000 + 10517049 = 3100^2 + 3243^2 .

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

It is not a de Polignac number, because 20127049 - 2⁵ = 20127017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20127043) 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, 20919 + ... + 21859.

It is an arithmetic number, because the mean of its divisors is an integer number (2561769).

Almost surely, 2^20127049 is an apocalyptic number.

It is an amenable number.

20127049 is a deficient number, since it is larger than the sum of its proper divisors (367103).

20127049 is an equidigital number, since it uses as much as digits as its factorization.

20127049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 20127049 is about 4486.3179780305. The cubic root of 20127049 is about 272.0153222698.

The spelling of 20127049 in words is "twenty million, one hundred twenty-seven thousand, forty-nine".