42003120424 has 16 divisors (see below), whose sum is σ = 78793727220. Its totient is φ = 20991459840.

The previous prime is 42003120409. The next prime is 42003120433. The reversal of 42003120424 is 42402130024.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 40598220100 + 1404900324 = 201490^2 + 37482^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42003120395 and 42003120404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1244859 + ... + 1278154.

Almost surely, 2^42003120424 is an apocalyptic number.

It is an amenable number.

42003120424 is a deficient number, since it is larger than the sum of its proper divisors (36790606796).

42003120424 is a wasteful number, since it uses less digits than its factorization.

42003120424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525100 (or 2525096 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 42003120424 its reverse (42402130024), we get a palindrome (84405250448).

The spelling of 42003120424 in words is "forty-two billion, three million, one hundred twenty thousand, four hundred twenty-four".