42235452 has 144 divisors (see below), whose sum is σ = 133297920. Its totient is φ = 11509344.

The previous prime is 42235451. The next prime is 42235471. The reversal of 42235452 is 25453224.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42235451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 121543 + ... + 121889.

It is an arithmetic number, because the mean of its divisors is an integer number (925680).

Almost surely, 2^42235452 is an apocalyptic number.

42235452 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42235452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66648960).

42235452 is an abundant number, since it is smaller than the sum of its proper divisors (91062468).

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

42235452 is a wasteful number, since it uses less digits than its factorization.

42235452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397 (or 382 counting only the distinct ones).

The product of its digits is 9600, while the sum is 27.

The square root of 42235452 is about 6498.8808267270. The cubic root of 42235452 is about 348.2510079683.

Adding to 42235452 its reverse (25453224), we get a palindrome (67688676).

The spelling of 42235452 in words is "forty-two million, two hundred thirty-five thousand, four hundred fifty-two".