42554 has 4 divisors (see below), whose sum is σ = 63834. Its totient is φ = 21276.

The previous prime is 42533. The next prime is 42557. The reversal of 42554 is 45524.

It is a happy number.

42554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 42025 + 529 = 205^2 + 23^2 .

It is an Ulam number.

It is a Curzon number.

It is a nialpdrome in base 9.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 42554.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10637 + ... + 10640.

2⁴²⁵⁵⁴ is an apocalyptic number.

42554 is a deficient number, since it is larger than the sum of its proper divisors (21280).

42554 is a wasteful number, since it uses less digits than its factorization.

42554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21279.

The product of its digits is 800, while the sum is 20.

The square root of 42554 is about 206.2862089428. The cubic root of 42554 is about 34.9124341646.

It can be divided in two parts, 4255 and 4, that multiplied together give a triangular number (17020 = T₁₈₄).

The spelling of 42554 in words is "forty-two thousand, five hundred fifty-four".