42320005 has 32 divisors (see below), whose sum is σ = 62915328. Its totient is φ = 26611200.

The previous prime is 42319993. The next prime is 42320009. The reversal of 42320005 is 50002324.

It is not a de Polignac number, because 42320005 - 2¹³ = 42311813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42320009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127690 + ... + 128020.

It is an arithmetic number, because the mean of its divisors is an integer number (1966104).

Almost surely, 2^42320005 is an apocalyptic number.

It is an amenable number.

42320005 is a deficient number, since it is larger than the sum of its proper divisors (20595323).

42320005 is a wasteful number, since it uses less digits than its factorization.

42320005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 42320005 is about 6505.3827712134. The cubic root of 42320005 is about 348.4832460399.

Adding to 42320005 its reverse (50002324), we get a palindrome (92322329).

It can be divided in two parts, 4232000 and 5, that multiplied together give a square (21160000 = 4600²).

The spelling of 42320005 in words is "forty-two million, three hundred twenty thousand, five".