42121352423 has 2 divisors, whose sum is σ = 42121352424. Its totient is φ = 42121352422.

The previous prime is 42121352401. The next prime is 42121352461. The reversal of 42121352423 is 32425312124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42121352423 - 2¹⁴ = 42121336039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42121352123) 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, 21060676211 + 21060676212.

It is an arithmetic number, because the mean of its divisors is an integer number (21060676212).

Almost surely, 2^42121352423 is an apocalyptic number.

42121352423 is a deficient number, since it is larger than the sum of its proper divisors (1).

42121352423 is an equidigital number, since it uses as much as digits as its factorization.

42121352423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 29.

Adding to 42121352423 its reverse (32425312124), we get a palindrome (74546664547).

The spelling of 42121352423 in words is "forty-two billion, one hundred twenty-one million, three hundred fifty-two thousand, four hundred twenty-three".