42550 has 24 divisors (see below), whose sum is σ = 84816. Its totient is φ = 15840.

The previous prime is 42533. The next prime is 42557. The reversal of 42550 is 5524.

It is a happy number.

42550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

42550 is a Rhonda number in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42557) by changing a digit.

42550 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1132 + ... + 1168.

It is an arithmetic number, because the mean of its divisors is an integer number (3534).

2⁴²⁵⁵⁰ is an apocalyptic number.

42550 is a deficient number, since it is larger than the sum of its proper divisors (42266).

42550 is a wasteful number, since it uses less digits than its factorization.

42550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 42550 is about 206.2765134474. The cubic root of 42550 is about 34.9113402282.

The spelling of 42550 in words is "forty-two thousand, five hundred fifty".