42187230 has 72 divisors (see below), whose sum is σ = 114076872. Its totient is φ = 11232432.

The previous prime is 42187207. The next prime is 42187253. The reversal of 42187230 is 3278124.

42187230 is a `hidden beast` number, since 421 + 8 + 7 + 230 = 666.

It is an interprime number because it is at equal distance from previous prime (42187207) and next prime (42187253).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42187194 and 42187203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 65289 + ... + 65931.

It is an arithmetic number, because the mean of its divisors is an integer number (1584401).

Almost surely, 2^42187230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42187230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57038436).

42187230 is an abundant number, since it is smaller than the sum of its proper divisors (71889642).

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

42187230 is an frugal number, since it uses more digits than its factorization.

42187230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674 (or 653 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 42187230 is about 6495.1697437403. The cubic root of 42187230 is about 348.1184198652.

The spelling of 42187230 in words is "forty-two million, one hundred eighty-seven thousand, two hundred thirty".