42547500 has 180 divisors, whose sum is σ = 141004864. Its totient is φ = 10800000.

The previous prime is 42547459. The next prime is 42547501. The reversal of 42547500 is 574524.

It is a tau number, because it is divible by the number of its divisors (180).

It is not an unprimeable number, because it can be changed into a prime (42547501) 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 59 ways as a sum of consecutive naturals, for example, 697470 + ... + 697530.

Almost surely, 2^42547500 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 42547500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70502432).

42547500 is an abundant number, since it is smaller than the sum of its proper divisors (98457364).

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

42547500 is a wasteful number, since it uses less digits than its factorization.

42547500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 42547500 is about 6522.8444715477. The cubic root of 42547500 is about 349.1065648311.

The spelling of 42547500 in words is "forty-two million, five hundred forty-seven thousand, five hundred".