42232590 has 80 divisors (see below), whose sum is σ = 120277872. Its totient is φ = 10596096.

The previous prime is 42232543. The next prime is 42232591. The reversal of 42232590 is 9523224.

42232590 is a `hidden beast` number, since 42 + 2 + 32 + 590 = 666.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42232591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 12237 + ... + 15303.

Almost surely, 2^42232590 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42232590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60138936).

42232590 is an abundant number, since it is smaller than the sum of its proper divisors (78045282).

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

42232590 is a wasteful number, since it uses less digits than its factorization.

42232590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3103 (or 3094 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 42232590 is about 6498.6606312378. The cubic root of 42232590 is about 348.2431416155.

The spelling of 42232590 in words is "forty-two million, two hundred thirty-two thousand, five hundred ninety".