42430625 has 20 divisors (see below), whose sum is σ = 54873060. Its totient is φ = 32760000.

The previous prime is 42430621. The next prime is 42430627. The reversal of 42430625 is 52603424.

It can be written as a sum of positive squares in 10 ways, for example, as 29246464 + 13184161 = 5408^2 + 3631^2 .

It is not a de Polignac number, because 42430625 - 2² = 42430621 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 42430594 and 42430603.

It is not an unprimeable number, because it can be changed into a prime (42430621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16955 + ... + 19295.

It is an arithmetic number, because the mean of its divisors is an integer number (2743653).

Almost surely, 2^42430625 is an apocalyptic number.

It is an amenable number.

42430625 is a deficient number, since it is larger than the sum of its proper divisors (12442435).

42430625 is an equidigital number, since it uses as much as digits as its factorization.

42430625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2390 (or 2375 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 42430625 is about 6513.8794124546. The cubic root of 42430625 is about 348.7866146045.

The spelling of 42430625 in words is "forty-two million, four hundred thirty thousand, six hundred twenty-five".