125121841 has 16 divisors (see below), whose sum is σ = 136914624. Its totient is φ = 113655744.

The previous prime is 125121839. The next prime is 125121869. The reversal of 125121841 is 148121521.

It is a cyclic number.

It is not a de Polignac number, because 125121841 - 2¹ = 125121839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125121881) 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, 407410 + ... + 407716.

It is an arithmetic number, because the mean of its divisors is an integer number (8557164).

Almost surely, 2^125121841 is an apocalyptic number.

It is an amenable number.

125121841 is a deficient number, since it is larger than the sum of its proper divisors (11792783).

125121841 is a wasteful number, since it uses less digits than its factorization.

125121841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720.

The product of its digits is 640, while the sum is 25.

The square root of 125121841 is about 11185.7874555169. The cubic root of 125121841 is about 500.1624019122.

The spelling of 125121841 in words is "one hundred twenty-five million, one hundred twenty-one thousand, eight hundred forty-one".