42214321 has 2 divisors, whose sum is σ = 42214322. Its totient is φ = 42214320.

The previous prime is 42214307. The next prime is 42214339. The reversal of 42214321 is 12341224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30924721 + 11289600 = 5561^2 + 3360^2 .

It is a cyclic number.

It is not a de Polignac number, because 42214321 - 2¹⁵ = 42181553 is a prime.

It is not a weakly prime, because it can be changed into another prime (42214351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21107160 + 21107161.

It is an arithmetic number, because the mean of its divisors is an integer number (21107161).

Almost surely, 2^42214321 is an apocalyptic number.

It is an amenable number.

42214321 is a deficient number, since it is larger than the sum of its proper divisors (1).

42214321 is an equidigital number, since it uses as much as digits as its factorization.

42214321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384, while the sum is 19.

The square root of 42214321 is about 6497.2548818713. The cubic root of 42214321 is about 348.1929199617.

Adding to 42214321 its reverse (12341224), we get a palindrome (54555545).

The spelling of 42214321 in words is "forty-two million, two hundred fourteen thousand, three hundred twenty-one".