42222023 has 2 divisors, whose sum is σ = 42222024. Its totient is φ = 42222022.

The previous prime is 42221989. The next prime is 42222041. The reversal of 42222023 is 32022224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42222023 - 2¹² = 42217927 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 42221992 and 42222010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42222073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21111011 + 21111012.

It is an arithmetic number, because the mean of its divisors is an integer number (21111012).

Almost surely, 2^42222023 is an apocalyptic number.

42222023 is a deficient number, since it is larger than the sum of its proper divisors (1).

42222023 is an equidigital number, since it uses as much as digits as its factorization.

42222023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 42222023 is about 6497.8475666947. The cubic root of 42222023 is about 348.2140945988.

Adding to 42222023 its reverse (32022224), we get a palindrome (74244247).

The spelling of 42222023 in words is "forty-two million, two hundred twenty-two thousand, twenty-three".