125138206 has 16 divisors (see below), whose sum is σ = 193411728. Its totient is φ = 60696000.

The previous prime is 125138203. The next prime is 125138231. The reversal of 125138206 is 602831521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125138201) 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 7 ways as a sum of consecutive naturals, for example, 1881 + ... + 15931.

It is an arithmetic number, because the mean of its divisors is an integer number (12088233).

Almost surely, 2^125138206 is an apocalyptic number.

125138206 is a deficient number, since it is larger than the sum of its proper divisors (68273522).

125138206 is a wasteful number, since it uses less digits than its factorization.

125138206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14187.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 125138206 is about 11186.5189402244. The cubic root of 125138206 is about 500.1842067940.

Adding to 125138206 its reverse (602831521), we get a palindrome (727969727).

The spelling of 125138206 in words is "one hundred twenty-five million, one hundred thirty-eight thousand, two hundred six".