125121002443 has 16 divisors (see below), whose sum is σ = 127980979776. Its totient is φ = 122280238080.

The previous prime is 125121002437. The next prime is 125121002453. The reversal of 125121002443 is 344200121521.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125121002443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125121002453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23591730 + ... + 23597032.

It is an arithmetic number, because the mean of its divisors is an integer number (7998811236).

Almost surely, 2^125121002443 is an apocalyptic number.

125121002443 is a deficient number, since it is larger than the sum of its proper divisors (2859977333).

125121002443 is a wasteful number, since it uses less digits than its factorization.

125121002443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7014.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 125121002443 its reverse (344200121521), we get a palindrome (469321123964).

The spelling of 125121002443 in words is "one hundred twenty-five billion, one hundred twenty-one million, two thousand, four hundred forty-three".