42525432 has 128 divisors (see below), whose sum is σ = 128865600. Its totient is φ = 12939264.

The previous prime is 42525419. The next prime is 42525433. The reversal of 42525432 is 23452524.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 42525396 and 42525405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42525433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135708 + ... + 136020.

Almost surely, 2^42525432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42525432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64432800).

42525432 is an abundant number, since it is smaller than the sum of its proper divisors (86340168).

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

42525432 is a wasteful number, since it uses less digits than its factorization.

42525432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382 (or 372 counting only the distinct ones).

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

The square root of 42525432 is about 6521.1526588480. The cubic root of 42525432 is about 349.0461976650.

Adding to 42525432 its reverse (23452524), we get a palindrome (65977956).

The spelling of 42525432 in words is "forty-two million, five hundred twenty-five thousand, four hundred thirty-two".