42189876 has 24 divisors (see below), whose sum is σ = 109381440. Its totient is φ = 14063256.

The previous prime is 42189811. The next prime is 42189877. The reversal of 42189876 is 67898124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42189877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195216 + ... + 195431.

It is an arithmetic number, because the mean of its divisors is an integer number (4557560).

Almost surely, 2^42189876 is an apocalyptic number.

It is an amenable number.

42189876 is an abundant number, since it is smaller than the sum of its proper divisors (67191564).

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

42189876 is a wasteful number, since it uses less digits than its factorization.

42189876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390660 (or 390652 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 42189876 is about 6495.3734303733. The cubic root of 42189876 is about 348.1256977553.

The spelling of 42189876 in words is "forty-two million, one hundred eighty-nine thousand, eight hundred seventy-six".