42012422143421 has 16 divisors (see below), whose sum is σ = 44541387221760. Its totient is φ = 39489880078080.

The previous prime is 42012422143403. The next prime is 42012422143453. The reversal of 42012422143421 is 12434122421024.

It is not a de Polignac number, because 42012422143421 - 2¹⁴ = 42012422127037 is a prime.

It is a super-2 number, since 2×42012422143421² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42012422146421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75666800 + ... + 76220006.

It is an arithmetic number, because the mean of its divisors is an integer number (2783836701360).

Almost surely, 2^{42012422143421} is an apocalyptic number.

It is an amenable number.

42012422143421 is a deficient number, since it is larger than the sum of its proper divisors (2528965078339).

42012422143421 is a wasteful number, since it uses less digits than its factorization.

42012422143421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559004.

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 42012422143421 its reverse (12434122421024), we get a palindrome (54446544564445).

The spelling of 42012422143421 in words is "forty-two trillion, twelve billion, four hundred twenty-two million, one hundred forty-three thousand, four hundred twenty-one".