42555223 has 4 divisors (see below), whose sum is σ = 42659680. Its totient is φ = 42450768.

The previous prime is 42555211. The next prime is 42555229. The reversal of 42555223 is 32255524.

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

It is a cyclic number.

It is not a de Polignac number, because 42555223 - 2²¹ = 40458071 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42555191 and 42555200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42555229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51615 + ... + 52432.

It is an arithmetic number, because the mean of its divisors is an integer number (10664920).

Almost surely, 2^42555223 is an apocalyptic number.

42555223 is a deficient number, since it is larger than the sum of its proper divisors (104457).

42555223 is a wasteful number, since it uses less digits than its factorization.

42555223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104456.

The product of its digits is 12000, while the sum is 28.

The square root of 42555223 is about 6523.4364410179. The cubic root of 42555223 is about 349.1276862201.

It can be divided in two parts, 42555 and 223, that added together give a triangular number (42778 = T₂₉₂).

The spelling of 42555223 in words is "forty-two million, five hundred fifty-five thousand, two hundred twenty-three".