42623351 has 2 divisors, whose sum is σ = 42623352. Its totient is φ = 42623350.

The previous prime is 42623299. The next prime is 42623353. The reversal of 42623351 is 15332624.

42623351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42623351 is a prime.

It is a Sophie Germain prime.

Together with 42623353, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42623351.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42623353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21311675 + 21311676.

It is an arithmetic number, because the mean of its divisors is an integer number (21311676).

Almost surely, 2^42623351 is an apocalyptic number.

42623351 is a deficient number, since it is larger than the sum of its proper divisors (1).

42623351 is an equidigital number, since it uses as much as digits as its factorization.

42623351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 26.

The square root of 42623351 is about 6528.6561404320. The cubic root of 42623351 is about 349.3138967303.

Adding to 42623351 its reverse (15332624), we get a palindrome (57955975).

The spelling of 42623351 in words is "forty-two million, six hundred twenty-three thousand, three hundred fifty-one".