125203071 has 32 divisors (see below), whose sum is σ = 194805760. Its totient is φ = 70053984.

The previous prime is 125203069. The next prime is 125203097. The reversal of 125203071 is 170302521.

It is not a de Polignac number, because 125203071 - 2¹ = 125203069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125203051) 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 31 ways as a sum of consecutive naturals, for example, 270186 + ... + 270648.

It is an arithmetic number, because the mean of its divisors is an integer number (6087680).

Almost surely, 2^125203071 is an apocalyptic number.

125203071 is a deficient number, since it is larger than the sum of its proper divisors (69602689).

125203071 is a wasteful number, since it uses less digits than its factorization.

125203071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 125203071 is about 11189.4178132734. The cubic root of 125203071 is about 500.2706148421.

Adding to 125203071 its reverse (170302521), we get a palindrome (295505592).

The spelling of 125203071 in words is "one hundred twenty-five million, two hundred three thousand, seventy-one".