42052500 has 240 divisors, whose sum is σ = 157449600. Its totient is φ = 9504000.

The previous prime is 42052499. The next prime is 42052513. The reversal of 42052500 is 525024.

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

It is a congruent number.

It is an unprimeable number.

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 79 ways as a sum of consecutive naturals, for example, 472456 + ... + 472544.

It is an arithmetic number, because the mean of its divisors is an integer number (656040).

Almost surely, 2^42052500 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 42052500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78724800).

42052500 is an abundant number, since it is smaller than the sum of its proper divisors (115397100).

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

42052500 is a wasteful number, since it uses less digits than its factorization.

42052500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 42052500 is about 6484.7898963652. The cubic root of 42052500 is about 347.7474386264.

Adding to 42052500 its reverse (525024), we get a palindrome (42577524).

The spelling of 42052500 in words is "forty-two million, fifty-two thousand, five hundred".