42340104523 has 2 divisors, whose sum is σ = 42340104524. Its totient is φ = 42340104522.

The previous prime is 42340104517. The next prime is 42340104533. The reversal of 42340104523 is 32540104324.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42340104523 - 2⁵ = 42340104491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42340104491 and 42340104500.

It is not a weakly prime, because it can be changed into another prime (42340104533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21170052261 + 21170052262.

It is an arithmetic number, because the mean of its divisors is an integer number (21170052262).

Almost surely, 2^42340104523 is an apocalyptic number.

42340104523 is a deficient number, since it is larger than the sum of its proper divisors (1).

42340104523 is an equidigital number, since it uses as much as digits as its factorization.

42340104523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 42340104523 its reverse (32540104324), we get a palindrome (74880208847).

The spelling of 42340104523 in words is "forty-two billion, three hundred forty million, one hundred four thousand, five hundred twenty-three".