42123134351 has 2 divisors, whose sum is σ = 42123134352. Its totient is φ = 42123134350.

The previous prime is 42123134303. The next prime is 42123134353. The reversal of 42123134351 is 15343132124.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42123134351 is a prime.

It is a Sophie Germain prime.

Together with 42123134353, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42123134353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21061567175 + 21061567176.

It is an arithmetic number, because the mean of its divisors is an integer number (21061567176).

Almost surely, 2^42123134351 is an apocalyptic number.

42123134351 is a deficient number, since it is larger than the sum of its proper divisors (1).

42123134351 is an equidigital number, since it uses as much as digits as its factorization.

42123134351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 29.

Adding to 42123134351 its reverse (15343132124), we get a palindrome (57466266475).

The spelling of 42123134351 in words is "forty-two billion, one hundred twenty-three million, one hundred thirty-four thousand, three hundred fifty-one".