122142421402423 has 2 divisors, whose sum is σ = 122142421402424. Its totient is φ = 122142421402422.

The previous prime is 122142421402367. The next prime is 122142421402493. The reversal of 122142421402423 is 324204124241221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122142421402423 - 2²¹ = 122142419305271 is a prime.

It is a super-2 number, since 2×122142421402423² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122142421402493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61071210701211 + 61071210701212.

It is an arithmetic number, because the mean of its divisors is an integer number (61071210701212).

Almost surely, 2^{122142421402423} is an apocalyptic number.

122142421402423 is a deficient number, since it is larger than the sum of its proper divisors (1).

122142421402423 is an equidigital number, since it uses as much as digits as its factorization.

122142421402423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49152, while the sum is 34.

Adding to 122142421402423 its reverse (324204124241221), we get a palindrome (446346545643644).

The spelling of 122142421402423 in words is "one hundred twenty-two trillion, one hundred forty-two billion, four hundred twenty-one million, four hundred two thousand, four hundred twenty-three".