125729371 has 4 divisors (see below), whose sum is σ = 128404512. Its totient is φ = 123054232.

The previous prime is 125729353. The next prime is 125729389. The reversal of 125729371 is 173927521.

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

It is an interprime number because it is at equal distance from previous prime (125729353) and next prime (125729389).

It is a cyclic number.

It is not a de Polignac number, because 125729371 - 2⁷ = 125729243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125729371.

It is not an unprimeable number, because it can be changed into a prime (125729311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1337500 + ... + 1337593.

It is an arithmetic number, because the mean of its divisors is an integer number (32101128).

Almost surely, 2^125729371 is an apocalyptic number.

125729371 is a deficient number, since it is larger than the sum of its proper divisors (2675141).

125729371 is an equidigital number, since it uses as much as digits as its factorization.

125729371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2675140.

The product of its digits is 26460, while the sum is 37.

The square root of 125729371 is about 11212.9109066290. The cubic root of 125729371 is about 500.9706092827.

It can be divided in two parts, 1257 and 29371, that added together give a triangular number (30628 = T₂₄₇).

The spelling of 125729371 in words is "one hundred twenty-five million, seven hundred twenty-nine thousand, three hundred seventy-one".