42125447 has 18 divisors (see below), whose sum is σ = 53072928. Its totient is φ = 33323472.

The previous prime is 42125437. The next prime is 42125477. The reversal of 42125447 is 74452124.

It is not a de Polignac number, because 42125447 - 2⁴ = 42125431 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 (42125437) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5738 + ... + 10824.

It is an arithmetic number, because the mean of its divisors is an integer number (2948496).

Almost surely, 2^42125447 is an apocalyptic number.

42125447 is a deficient number, since it is larger than the sum of its proper divisors (10947481).

42125447 is a wasteful number, since it uses less digits than its factorization.

42125447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5127 (or 5107 counting only the distinct ones).

The product of its digits is 8960, while the sum is 29.

The square root of 42125447 is about 6490.4119283756. The cubic root of 42125447 is about 347.9483975761.

The spelling of 42125447 in words is "forty-two million, one hundred twenty-five thousand, four hundred forty-seven".