125242111 has 4 divisors (see below), whose sum is σ = 132609312. Its totient is φ = 117874912.

The previous prime is 125242093. The next prime is 125242123. The reversal of 125242111 is 111242521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125242111 - 2⁷ = 125241983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125242141) 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, 3683575 + ... + 3683608.

It is an arithmetic number, because the mean of its divisors is an integer number (33152328).

Almost surely, 2^125242111 is an apocalyptic number.

125242111 is a deficient number, since it is larger than the sum of its proper divisors (7367201).

125242111 is an equidigital number, since it uses as much as digits as its factorization.

125242111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7367200.

The product of its digits is 160, while the sum is 19.

The square root of 125242111 is about 11191.1621827226. The cubic root of 125242111 is about 500.3226064720.

Adding to 125242111 its reverse (111242521), we get a palindrome (236484632).

The spelling of 125242111 in words is "one hundred twenty-five million, two hundred forty-two thousand, one hundred eleven".