42400410123 has 4 divisors (see below), whose sum is σ = 56533880168. Its totient is φ = 28266940080.

The previous prime is 42400410071. The next prime is 42400410131. The reversal of 42400410123 is 32101400424.

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

It is not a de Polignac number, because 42400410123 - 2²⁶ = 42333301259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42400410123.

It is not an unprimeable number, because it can be changed into a prime (42400410163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7066735018 + ... + 7066735023.

It is an arithmetic number, because the mean of its divisors is an integer number (14133470042).

Almost surely, 2^42400410123 is an apocalyptic number.

42400410123 is a deficient number, since it is larger than the sum of its proper divisors (14133470045).

42400410123 is a wasteful number, since it uses less digits than its factorization.

42400410123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14133470044.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 42400410123 its reverse (32101400424), we get a palindrome (74501810547).

The spelling of 42400410123 in words is "forty-two billion, four hundred million, four hundred ten thousand, one hundred twenty-three".