42015554243 has 6 divisors (see below), whose sum is σ = 45496132884. Its totient is φ = 38783588376.

The previous prime is 42015554227. The next prime is 42015554263. The reversal of 42015554243 is 34245551024.

It is not a de Polignac number, because 42015554243 - 2⁴ = 42015554227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42015554263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 124306205 + ... + 124306542.

It is an arithmetic number, because the mean of its divisors is an integer number (7582688814).

Almost surely, 2^42015554243 is an apocalyptic number.

42015554243 is a deficient number, since it is larger than the sum of its proper divisors (3480578641).

42015554243 is a wasteful number, since it uses less digits than its factorization.

42015554243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248612773 (or 248612760 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

The spelling of 42015554243 in words is "forty-two billion, fifteen million, five hundred fifty-four thousand, two hundred forty-three".