42123301043 has 4 divisors (see below), whose sum is σ = 42124634760. Its totient is φ = 42121967328.

The previous prime is 42123301039. The next prime is 42123301111. The reversal of 42123301043 is 34010332124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42123301043 - 2² = 42123301039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42123301543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 618305 + ... + 683042.

It is an arithmetic number, because the mean of its divisors is an integer number (10531158690).

Almost surely, 2^42123301043 is an apocalyptic number.

42123301043 is a deficient number, since it is larger than the sum of its proper divisors (1333717).

42123301043 is a wasteful number, since it uses less digits than its factorization.

42123301043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333716.

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

Adding to 42123301043 its reverse (34010332124), we get a palindrome (76133633167).

The spelling of 42123301043 in words is "forty-two billion, one hundred twenty-three million, three hundred one thousand, forty-three".