42321005 has 8 divisors (see below), whose sum is σ = 52536600. Its totient is φ = 32689216.

The previous prime is 42320969. The next prime is 42321017. The reversal of 42321005 is 50012324.

It can be written as a sum of positive squares in 4 ways, for example, as 3020644 + 39300361 = 1738^2 + 6269^2 .

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 42321005 - 2⁸ = 42320749 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145790 + ... + 146079.

It is an arithmetic number, because the mean of its divisors is an integer number (6567075).

Almost surely, 2^42321005 is an apocalyptic number.

It is an amenable number.

42321005 is a deficient number, since it is larger than the sum of its proper divisors (10215595).

42321005 is a wasteful number, since it uses less digits than its factorization.

42321005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291903.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 42321005 is about 6505.4596301876. The cubic root of 42321005 is about 348.4859908450.

Adding to 42321005 its reverse (50012324), we get a palindrome (92333329).

The spelling of 42321005 in words is "forty-two million, three hundred twenty-one thousand, five".