42781425 has 12 divisors (see below), whose sum is σ = 70732080. Its totient is φ = 22816720.

The previous prime is 42781411. The next prime is 42781429. The reversal of 42781425 is 52418724.

42781425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42781425 - 2¹⁰ = 42780401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42781429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 285135 + ... + 285284.

It is an arithmetic number, because the mean of its divisors is an integer number (5894340).

Almost surely, 2^42781425 is an apocalyptic number.

It is an amenable number.

42781425 is a deficient number, since it is larger than the sum of its proper divisors (27950655).

42781425 is a wasteful number, since it uses less digits than its factorization.

42781425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570432 (or 570427 counting only the distinct ones).

The product of its digits is 17920, while the sum is 33.

The square root of 42781425 is about 6540.7511036577. The cubic root of 42781425 is about 349.7451886838.

The spelling of 42781425 in words is "forty-two million, seven hundred eighty-one thousand, four hundred twenty-five".