42321992 has 16 divisors (see below), whose sum is σ = 80246700. Its totient is φ = 20922880.

The previous prime is 42321977. The next prime is 42321997. The reversal of 42321992 is 29912324.

It can be written as a sum of positive squares in 2 ways, for example, as 35593156 + 6728836 = 5966^2 + 2594^2 .

It is not an unprimeable number, because it can be changed into a prime (42321997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29009 + ... + 30432.

Almost surely, 2^42321992 is an apocalyptic number.

It is an amenable number.

42321992 is a deficient number, since it is larger than the sum of its proper divisors (37924708).

42321992 is a wasteful number, since it uses less digits than its factorization.

42321992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59536 (or 59532 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The square root of 42321992 is about 6505.5354891046. The cubic root of 42321992 is about 348.4886999253.

The spelling of 42321992 in words is "forty-two million, three hundred twenty-one thousand, nine hundred ninety-two".