42004143412420 has 72 divisors (see below), whose sum is σ = 102790457262360. Its totient is φ = 14376110353920.

The previous prime is 42004143412409. The next prime is 42004143412421. The reversal of 42004143412420 is 2421434140024.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10552505365444 + 31451638046976 = 3248462^2 + 5608176^2 .

It is a super-2 number, since 2×42004143412420² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42004143412421) 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 23 ways as a sum of consecutive naturals, for example, 37106151 + ... + 38221390.

It is an arithmetic number, because the mean of its divisors is an integer number (1427645239755).

Almost surely, 2^{42004143412420} is an apocalyptic number.

It is an amenable number.

42004143412420 is an abundant number, since it is smaller than the sum of its proper divisors (60786313849940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42004143412420 is a wasteful number, since it uses less digits than its factorization.

42004143412420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75328133 (or 75328124 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 42004143412420 its reverse (2421434140024), we get a palindrome (44425577552444).

The spelling of 42004143412420 in words is "forty-two trillion, four billion, one hundred forty-three million, four hundred twelve thousand, four hundred twenty".