127049999 has 4 divisors (see below), whose sum is σ = 132573936. Its totient is φ = 121526064.

The previous prime is 127049947. The next prime is 127050019. The reversal of 127049999 is 999940721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127049999 is a prime.

It is a super-2 number, since 2×127049999² = 32283404491800002, which contains 22 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 (127043999) 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 3 ways as a sum of consecutive naturals, for example, 2761934 + ... + 2761979.

It is an arithmetic number, because the mean of its divisors is an integer number (33143484).

Almost surely, 2^127049999 is an apocalyptic number.

127049999 is a deficient number, since it is larger than the sum of its proper divisors (5523937).

127049999 is an equidigital number, since it uses as much as digits as its factorization.

127049999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5523936.

The product of its (nonzero) digits is 367416, while the sum is 50.

The square root of 127049999 is about 11271.6457981965. The cubic root of 127049999 is about 502.7185244616.

The spelling of 127049999 in words is "one hundred twenty-seven million, forty-nine thousand, nine hundred ninety-nine".