42421230 has 48 divisors (see below), whose sum is σ = 112117824. Its totient is φ = 11125440.

The previous prime is 42421219. The next prime is 42421231. The reversal of 42421230 is 3212424.

42421230 is a `hidden beast` number, since 424 + 212 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42421231) 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, 1627 + ... + 9353.

It is an arithmetic number, because the mean of its divisors is an integer number (2335788).

Almost surely, 2^42421230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42421230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56058912).

42421230 is an abundant number, since it is smaller than the sum of its proper divisors (69696594).

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

42421230 is a wasteful number, since it uses less digits than its factorization.

42421230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7801 (or 7798 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 42421230 is about 6513.1582200957. The cubic root of 42421230 is about 348.7608698967.

Adding to 42421230 its reverse (3212424), we get a palindrome (45633654).

The spelling of 42421230 in words is "forty-two million, four hundred twenty-one thousand, two hundred thirty".