42039471973 has 4 divisors (see below), whose sum is σ = 42297383008. Its totient is φ = 41781560940.

The previous prime is 42039471941. The next prime is 42039472001. The reversal of 42039471973 is 37917493024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42039471973 - 2⁵ = 42039471941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42039471923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128955273 + ... + 128955598.

It is an arithmetic number, because the mean of its divisors is an integer number (10574345752).

Almost surely, 2^42039471973 is an apocalyptic number.

It is an amenable number.

42039471973 is a deficient number, since it is larger than the sum of its proper divisors (257911035).

42039471973 is a wasteful number, since it uses less digits than its factorization.

42039471973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257911034.

The product of its (nonzero) digits is 1143072, while the sum is 49.

The spelling of 42039471973 in words is "forty-two billion, thirty-nine million, four hundred seventy-one thousand, nine hundred seventy-three".