127438273 has 4 divisors (see below), whose sum is σ = 134934660. Its totient is φ = 119941888.

The previous prime is 127438261. The next prime is 127438279. The reversal of 127438273 is 372834721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 372834721 = 7 ⋅53262103.

It can be written as a sum of positive squares in 2 ways, for example, as 111661489 + 15776784 = 10567^2 + 3972^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127438273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127438279) 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, 3748168 + ... + 3748201.

It is an arithmetic number, because the mean of its divisors is an integer number (33733665).

Almost surely, 2^127438273 is an apocalyptic number.

It is an amenable number.

127438273 is a deficient number, since it is larger than the sum of its proper divisors (7496387).

127438273 is an equidigital number, since it uses as much as digits as its factorization.

127438273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7496386.

The product of its digits is 56448, while the sum is 37.

The square root of 127438273 is about 11288.8561422316. The cubic root of 127438273 is about 503.2301184009.

Adding to 127438273 its product of digits (56448), we get a palindrome (127494721).

The spelling of 127438273 in words is "one hundred twenty-seven million, four hundred thirty-eight thousand, two hundred seventy-three".