127052009 has 4 divisors (see below), whose sum is σ = 145202304. Its totient is φ = 108901716.

The previous prime is 127051979. The next prime is 127052017. The reversal of 127052009 is 900250721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 900250721 = 233 ⋅3863737.

It is not a de Polignac number, because 127052009 - 2⁸ = 127051753 is a prime.

It is a super-2 number, since 2×127052009² = 32284425981872162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127052059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9075137 + ... + 9075150.

It is an arithmetic number, because the mean of its divisors is an integer number (36300576).

Almost surely, 2^127052009 is an apocalyptic number.

It is an amenable number.

127052009 is a deficient number, since it is larger than the sum of its proper divisors (18150295).

127052009 is an equidigital number, since it uses as much as digits as its factorization.

127052009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18150294.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 127052009 is about 11271.7349596236. The cubic root of 127052009 is about 502.7211755410.

The spelling of 127052009 in words is "one hundred twenty-seven million, fifty-two thousand, nine".