42187698 has 48 divisors (see below), whose sum is σ = 105071616. Its totient is φ = 11983680.

The previous prime is 42187697. The next prime is 42187709. The reversal of 42187698 is 89678124.

It is not an unprimeable number, because it can be changed into a prime (42187697) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23190 + ... + 24942.

It is an arithmetic number, because the mean of its divisors is an integer number (2188992).

Almost surely, 2^42187698 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42187698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52535808).

42187698 is an abundant number, since it is smaller than the sum of its proper divisors (62883918).

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

42187698 is a wasteful number, since it uses less digits than its factorization.

42187698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1959 (or 1956 counting only the distinct ones).

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

The square root of 42187698 is about 6495.2057704125. The cubic root of 42187698 is about 348.1197071332.

The spelling of 42187698 in words is "forty-two million, one hundred eighty-seven thousand, six hundred ninety-eight".