127172406 has 24 divisors (see below), whose sum is σ = 260911224. Its totient is φ = 41299360.

The previous prime is 127172401. The next prime is 127172411. The reversal of 127172406 is 604271721.

It is an interprime number because it is at equal distance from previous prime (127172401) and next prime (127172411).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127172401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 176515 + ... + 177233.

It is an arithmetic number, because the mean of its divisors is an integer number (10871301).

Almost surely, 2^127172406 is an apocalyptic number.

127172406 is an abundant number, since it is smaller than the sum of its proper divisors (133738818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

127172406 is an frugal number, since it uses more digits than its factorization.

127172406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484 (or 765 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 127172406 is about 11277.0743546365. The cubic root of 127172406 is about 502.8799215887.

The spelling of 127172406 in words is "one hundred twenty-seven million, one hundred seventy-two thousand, four hundred six".