42325921 has 6 divisors (see below), whose sum is σ = 46523666. Its totient is φ = 38478000.

The previous prime is 42325919. The next prime is 42325949. The reversal of 42325921 is 12952324.

42325921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 36469521 + 5856400 = 6039^2 + 2420^2 .

It is not a de Polignac number, because 42325921 - 2¹ = 42325919 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42325921.

It is not an unprimeable number, because it can be changed into a prime (42325961) 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 5 ways as a sum of consecutive naturals, for example, 174780 + ... + 175021.

Almost surely, 2^42325921 is an apocalyptic number.

It is an amenable number.

42325921 is a deficient number, since it is larger than the sum of its proper divisors (4197745).

42325921 is a wasteful number, since it uses less digits than its factorization.

42325921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349823 (or 349812 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 42325921 is about 6505.8374557008. The cubic root of 42325921 is about 348.4994836783.

It can be divided in two parts, 4232 and 5921, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 42325921 in words is "forty-two million, three hundred twenty-five thousand, nine hundred twenty-one".