42931625 has 16 divisors (see below), whose sum is σ = 58451328. Its totient is φ = 31222000.

The previous prime is 42931601. The next prime is 42931631. The reversal of 42931625 is 52613924.

It is a happy number.

42931625 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 42931625 - 2⁶ = 42931561 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42931591 and 42931600.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 14237 + ... + 16986.

It is an arithmetic number, because the mean of its divisors is an integer number (3653208).

Almost surely, 2^42931625 is an apocalyptic number.

It is an amenable number.

42931625 is a deficient number, since it is larger than the sum of its proper divisors (15519703).

42931625 is a wasteful number, since it uses less digits than its factorization.

42931625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31249 (or 31239 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 42931625 is about 6552.2229052437. Note that the first 3 decimals coincide. The cubic root of 42931625 is about 350.1540138505.

The spelling of 42931625 in words is "forty-two million, nine hundred thirty-one thousand, six hundred twenty-five".