125042407 has 4 divisors (see below), whose sum is σ = 142905616. Its totient is φ = 107179200.

The previous prime is 125042399. The next prime is 125042443. The reversal of 125042407 is 704240521.

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 125042407 - 2³ = 125042399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125042107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8931594 + ... + 8931607.

It is an arithmetic number, because the mean of its divisors is an integer number (35726404).

Almost surely, 2^125042407 is an apocalyptic number.

125042407 is a deficient number, since it is larger than the sum of its proper divisors (17863209).

125042407 is an equidigital number, since it uses as much as digits as its factorization.

125042407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17863208.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 125042407 is about 11182.2362253710. The cubic root of 125042407 is about 500.0565362737.

Adding to 125042407 its reverse (704240521), we get a palindrome (829282928).

The spelling of 125042407 in words is "one hundred twenty-five million, forty-two thousand, four hundred seven".