42320455 has 8 divisors (see below), whose sum is σ = 51396912. Its totient is φ = 33448128.

The previous prime is 42320441. The next prime is 42320459. The reversal of 42320455 is 55402324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42320455 - 2⁵ = 42320423 is a prime.

It is a super-2 number, since 2×42320455² = 3582041822814050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42320459) 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 7 ways as a sum of consecutive naturals, for example, 50574 + ... + 51403.

It is an arithmetic number, because the mean of its divisors is an integer number (6424614).

Almost surely, 2^42320455 is an apocalyptic number.

42320455 is a deficient number, since it is larger than the sum of its proper divisors (9076457).

42320455 is a wasteful number, since it uses less digits than its factorization.

42320455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102065.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 42320455 is about 6505.4173578641. The cubic root of 42320455 is about 348.4844812075.

Adding to 42320455 its reverse (55402324), we get a palindrome (97722779).

The spelling of 42320455 in words is "forty-two million, three hundred twenty thousand, four hundred fifty-five".