127125445 has 4 divisors (see below), whose sum is σ = 152550540. Its totient is φ = 101700352.

The previous prime is 127125443. The next prime is 127125463. The reversal of 127125445 is 544521721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 544521721 = 13049 ⋅41729.

It can be written as a sum of positive squares in 2 ways, for example, as 37368769 + 89756676 = 6113^2 + 9474^2 .

It is a cyclic number.

It is not a de Polignac number, because 127125445 - 2¹ = 127125443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127125443) 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, 12712540 + ... + 12712549.

It is an arithmetic number, because the mean of its divisors is an integer number (38137635).

Almost surely, 2^127125445 is an apocalyptic number.

It is an amenable number.

127125445 is a deficient number, since it is larger than the sum of its proper divisors (25425095).

127125445 is an equidigital number, since it uses as much as digits as its factorization.

127125445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25425094.

The product of its digits is 11200, while the sum is 31.

The square root of 127125445 is about 11274.9920177355. The cubic root of 127125445 is about 502.8180144182.

The spelling of 127125445 in words is "one hundred twenty-seven million, one hundred twenty-five thousand, four hundred forty-five".