127437133 has 4 divisors (see below), whose sum is σ = 128084220. Its totient is φ = 126790048.

The previous prime is 127437077. The next prime is 127437137. The reversal of 127437133 is 331734721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331734721 = 191 ⋅1736831.

It can be written as a sum of positive squares in 2 ways, for example, as 123587689 + 3849444 = 11117^2 + 1962^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127437133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 127437095 and 127437104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127437137) 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, 323248 + ... + 323641.

It is an arithmetic number, because the mean of its divisors is an integer number (32021055).

Almost surely, 2^127437133 is an apocalyptic number.

It is an amenable number.

127437133 is a deficient number, since it is larger than the sum of its proper divisors (647087).

127437133 is an equidigital number, since it uses as much as digits as its factorization.

127437133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647086.

The product of its digits is 10584, while the sum is 31.

The square root of 127437133 is about 11288.8056498462. The cubic root of 127437133 is about 503.2286178469.

The spelling of 127437133 in words is "one hundred twenty-seven million, four hundred thirty-seven thousand, one hundred thirty-three".