42000420454539 has 4 divisors (see below), whose sum is σ = 56000560606056. Its totient is φ = 28000280303024.

The previous prime is 42000420454511. The next prime is 42000420454543. The reversal of 42000420454539 is 93545402400024.

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

It is a cyclic number.

It is not a de Polignac number, because 42000420454539 - 2¹⁷ = 42000420323467 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42000420454539.

It is not an unprimeable number, because it can be changed into a prime (42000420454339) 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, 7000070075754 + ... + 7000070075759.

It is an arithmetic number, because the mean of its divisors is an integer number (14000140151514).

Almost surely, 2^{42000420454539} is an apocalyptic number.

42000420454539 is a deficient number, since it is larger than the sum of its proper divisors (14000140151517).

42000420454539 is a wasteful number, since it uses less digits than its factorization.

42000420454539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14000140151516.

The product of its (nonzero) digits is 691200, while the sum is 42.

The spelling of 42000420454539 in words is "forty-two trillion, four hundred twenty million, four hundred fifty-four thousand, five hundred thirty-nine".