42320555 has 4 divisors (see below), whose sum is σ = 50784672. Its totient is φ = 33856440.

The previous prime is 42320527. The next prime is 42320561. The reversal of 42320555 is 55502324.

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

It is not a de Polignac number, because 42320555 - 2⁶ = 42320491 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4232051 + ... + 4232060.

It is an arithmetic number, because the mean of its divisors is an integer number (12696168).

Almost surely, 2^42320555 is an apocalyptic number.

42320555 is a deficient number, since it is larger than the sum of its proper divisors (8464117).

42320555 is an equidigital number, since it uses as much as digits as its factorization.

42320555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8464116.

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 42320555 is about 6505.4250437616. The cubic root of 42320555 is about 348.4847556880.

Adding to 42320555 its reverse (55502324), we get a palindrome (97822879).

It can be divided in two parts, 42320 and 555, that added together give a cube (42875 = 35³).

The spelling of 42320555 in words is "forty-two million, three hundred twenty thousand, five hundred fifty-five".