42319820 has 24 divisors (see below), whose sum is σ = 89197584. Its totient is φ = 16865856.

The previous prime is 42319819. The next prime is 42319843. The reversal of 42319820 is 2891324.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1922 + ... + 9398.

It is an arithmetic number, because the mean of its divisors is an integer number (3716566).

Almost surely, 2^42319820 is an apocalyptic number.

It is an amenable number.

42319820 is an abundant number, since it is smaller than the sum of its proper divisors (46877764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42319820 is a wasteful number, since it uses less digits than its factorization.

42319820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7769 (or 7767 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 42319820 is about 6505.3685522036. The cubic root of 42319820 is about 348.4827382462.

The spelling of 42319820 in words is "forty-two million, three hundred nineteen thousand, eight hundred twenty".