42210442423 has 2 divisors, whose sum is σ = 42210442424. Its totient is φ = 42210442422.

The previous prime is 42210442409. The next prime is 42210442429. The reversal of 42210442423 is 32424401224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42210442423 - 2³³ = 33620507831 is a prime.

It is a super-2 number, since 2×42210442423² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42210442391 and 42210442400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42210442429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21105221211 + 21105221212.

It is an arithmetic number, because the mean of its divisors is an integer number (21105221212).

Almost surely, 2^42210442423 is an apocalyptic number.

42210442423 is a deficient number, since it is larger than the sum of its proper divisors (1).

42210442423 is an equidigital number, since it uses as much as digits as its factorization.

42210442423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 42210442423 its reverse (32424401224), we get a palindrome (74634843647).

The spelling of 42210442423 in words is "forty-two billion, two hundred ten million, four hundred forty-two thousand, four hundred twenty-three".