127720413 has 12 divisors (see below), whose sum is σ = 194195040. Its totient is φ = 80665416.

The previous prime is 127720381. The next prime is 127720421. The reversal of 127720413 is 314027721.

It is a happy number.

It is not a de Polignac number, because 127720413 - 2⁵ = 127720381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127720213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 373281 + ... + 373622.

It is an arithmetic number, because the mean of its divisors is an integer number (16182920).

Almost surely, 2^127720413 is an apocalyptic number.

It is an amenable number.

127720413 is a deficient number, since it is larger than the sum of its proper divisors (66474627).

127720413 is a wasteful number, since it uses less digits than its factorization.

127720413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746928 (or 746925 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 127720413 is about 11301.3456278445. The cubic root of 127720413 is about 503.6012175268.

The spelling of 127720413 in words is "one hundred twenty-seven million, seven hundred twenty thousand, four hundred thirteen".