42525330 has 32 divisors (see below), whose sum is σ = 108065664. Its totient is φ = 10672896.

The previous prime is 42525311. The next prime is 42525341. The reversal of 42525330 is 3352524.

It is a self number, because there is not a number n which added to its sum of digits gives 42525330.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41182 + ... + 42201.

It is an arithmetic number, because the mean of its divisors is an integer number (3377052).

Almost surely, 2^42525330 is an apocalyptic number.

42525330 is an abundant number, since it is smaller than the sum of its proper divisors (65540334).

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

42525330 is a wasteful number, since it uses less digits than its factorization.

42525330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83410.

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 42525330 is about 6521.1448381400. The cubic root of 42525330 is about 349.0459185948.

Adding to 42525330 its reverse (3352524), we get a palindrome (45877854).

The spelling of 42525330 in words is "forty-two million, five hundred twenty-five thousand, three hundred thirty".