42026321 has 4 divisors (see below), whose sum is σ = 42040944. Its totient is φ = 42011700.

The previous prime is 42026311. The next prime is 42026333. The reversal of 42026321 is 12362024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42026321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42026293 and 42026302.

It is not an unprimeable number, because it can be changed into a prime (42026311) 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, 1415 + ... + 9276.

It is an arithmetic number, because the mean of its divisors is an integer number (10510236).

Almost surely, 2^42026321 is an apocalyptic number.

It is an amenable number.

42026321 is a deficient number, since it is larger than the sum of its proper divisors (14623).

42026321 is a wasteful number, since it uses less digits than its factorization.

42026321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14622.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 42026321 is about 6482.7710895882. The cubic root of 42026321 is about 347.6752624184.

Adding to 42026321 its reverse (12362024), we get a palindrome (54388345).

The spelling of 42026321 in words is "forty-two million, twenty-six thousand, three hundred twenty-one".