125443387 has 4 divisors (see below), whose sum is σ = 125532360. Its totient is φ = 125354416.

The previous prime is 125443369. The next prime is 125443393. The reversal of 125443387 is 783344521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125443387 - 2¹¹ = 125441339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125443337) 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 3 ways as a sum of consecutive naturals, for example, 42337 + ... + 45202.

It is an arithmetic number, because the mean of its divisors is an integer number (31383090).

Almost surely, 2^125443387 is an apocalyptic number.

125443387 is a deficient number, since it is larger than the sum of its proper divisors (88973).

125443387 is an equidigital number, since it uses as much as digits as its factorization.

125443387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88972.

The product of its digits is 80640, while the sum is 37.

The square root of 125443387 is about 11200.1512043365. The cubic root of 125443387 is about 500.5904850470.

It can be divided in two parts, 12544 and 3387, that added together give a triangular number (15931 = T₁₇₈).

The spelling of 125443387 in words is "one hundred twenty-five million, four hundred forty-three thousand, three hundred eighty-seven".