127531641 has 4 divisors (see below), whose sum is σ = 170042192. Its totient is φ = 85021092.

The previous prime is 127531639. The next prime is 127531669. The reversal of 127531641 is 146135721.

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.

It is not a de Polignac number, because 127531641 - 2¹ = 127531639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 127531599 and 127531608.

It is not an unprimeable number, because it can be changed into a prime (127531601) 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, 21255271 + ... + 21255276.

It is an arithmetic number, because the mean of its divisors is an integer number (42510548).

Almost surely, 2^127531641 is an apocalyptic number.

It is an amenable number.

127531641 is a deficient number, since it is larger than the sum of its proper divisors (42510551).

127531641 is an equidigital number, since it uses as much as digits as its factorization.

127531641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42510550.

The product of its digits is 5040, while the sum is 30.

The square root of 127531641 is about 11292.9907907516. The cubic root of 127531641 is about 503.3529860412.

The spelling of 127531641 in words is "one hundred twenty-seven million, five hundred thirty-one thousand, six hundred forty-one".