42199980 has 48 divisors (see below), whose sum is σ = 121359840. Its totient is φ = 10948608.

The previous prime is 42199951. The next prime is 42199987. The reversal of 42199980 is 8999124.

It is not an unprimeable number, because it can be changed into a prime (42199987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7285 + ... + 11724.

It is an arithmetic number, because the mean of its divisors is an integer number (2528330).

Almost surely, 2^42199980 is an apocalyptic number.

It is an amenable number.

42199980 is an abundant number, since it is smaller than the sum of its proper divisors (79159860).

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

42199980 is a wasteful number, since it uses less digits than its factorization.

42199980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19058 (or 19056 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 42199980 is about 6496.1511681918. The cubic root of 42199980 is about 348.1534862647.

The spelling of 42199980 in words is "forty-two million, one hundred ninety-nine thousand, nine hundred eighty".