125123210403 has 16 divisors (see below), whose sum is σ = 167557455360. Its totient is φ = 83052339104.

The previous prime is 125123210389. The next prime is 125123210477. The reversal of 125123210403 is 304012321521.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125123210403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125123210903) 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 15 ways as a sum of consecutive naturals, for example, 5791900 + ... + 5813462.

It is an arithmetic number, because the mean of its divisors is an integer number (10472340960).

Almost surely, 2^125123210403 is an apocalyptic number.

125123210403 is a deficient number, since it is larger than the sum of its proper divisors (42434244957).

125123210403 is a wasteful number, since it uses less digits than its factorization.

125123210403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29898.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 125123210403 its reverse (304012321521), we get a palindrome (429135531924).

The spelling of 125123210403 in words is "one hundred twenty-five billion, one hundred twenty-three million, two hundred ten thousand, four hundred three".