42002430123 has 32 divisors (see below), whose sum is σ = 59280751360. Its totient is φ = 26379768960.

The previous prime is 42002430121. The next prime is 42002430137. The reversal of 42002430123 is 32103420024.

42002430123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42002430123 - 2¹ = 42002430121 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 42002430123.

It is not an unprimeable number, because it can be changed into a prime (42002430121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8724465 + ... + 8729277.

It is an arithmetic number, because the mean of its divisors is an integer number (1852523480).

Almost surely, 2^42002430123 is an apocalyptic number.

42002430123 is a deficient number, since it is larger than the sum of its proper divisors (17278321237).

42002430123 is a wasteful number, since it uses less digits than its factorization.

42002430123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5659.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 42002430123 its reverse (32103420024), we get a palindrome (74105850147).

The spelling of 42002430123 in words is "forty-two billion, two million, four hundred thirty thousand, one hundred twenty-three".