125872042003 has 4 divisors (see below), whose sum is σ = 125878235920. Its totient is φ = 125865848088.

The previous prime is 125872041983. The next prime is 125872042027. The reversal of 125872042003 is 300240278521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 300240278521 = 191 ⋅1571938631.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125872042003 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 125872042003.

It is not an unprimeable number, because it can be changed into a prime (125872042033) 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, 3066375 + ... + 3107152.

It is an arithmetic number, because the mean of its divisors is an integer number (31469558980).

Almost surely, 2^125872042003 is an apocalyptic number.

125872042003 is a deficient number, since it is larger than the sum of its proper divisors (6193917).

125872042003 is an equidigital number, since it uses as much as digits as its factorization.

125872042003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6193916.

The product of its (nonzero) digits is 26880, while the sum is 34.

The spelling of 125872042003 in words is "one hundred twenty-five billion, eight hundred seventy-two million, forty-two thousand, three".