42016436554 has 4 divisors (see below), whose sum is σ = 63024654834. Its totient is φ = 21008218276.

The previous prime is 42016436537. The next prime is 42016436563. The reversal of 42016436554 is 45563461024.

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

It can be written as a sum of positive squares in only one way, i.e., 26317599529 + 15698837025 = 162227^2 + 125295^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10504109137 + ... + 10504109140.

Almost surely, 2^42016436554 is an apocalyptic number.

42016436554 is a deficient number, since it is larger than the sum of its proper divisors (21008218280).

42016436554 is a wasteful number, since it uses less digits than its factorization.

42016436554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21008218279.

The product of its (nonzero) digits is 345600, while the sum is 40.

Adding to 42016436554 its reverse (45563461024), we get a palindrome (87579897578).

The spelling of 42016436554 in words is "forty-two billion, sixteen million, four hundred thirty-six thousand, five hundred fifty-four".