42043301123 has 2 divisors, whose sum is σ = 42043301124. Its totient is φ = 42043301122.

The previous prime is 42043301117. The next prime is 42043301197. The reversal of 42043301123 is 32110334024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42043301123 - 2⁸ = 42043300867 is a prime.

It is a super-2 number, since 2×42043301123² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (42043301723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21021650561 + 21021650562.

It is an arithmetic number, because the mean of its divisors is an integer number (21021650562).

Almost surely, 2^42043301123 is an apocalyptic number.

42043301123 is a deficient number, since it is larger than the sum of its proper divisors (1).

42043301123 is an equidigital number, since it uses as much as digits as its factorization.

42043301123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 42043301123 its reverse (32110334024), we get a palindrome (74153635147).

The spelling of 42043301123 in words is "forty-two billion, forty-three million, three hundred one thousand, one hundred twenty-three".