42128890206 has 24 divisors (see below), whose sum is σ = 91237717080. Its totient is φ = 12962735136.

The previous prime is 42128890201. The next prime is 42128890259. The reversal of 42128890206 is 60209882124.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42128890201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20772601 + ... + 20774628.

It is an arithmetic number, because the mean of its divisors is an integer number (3801571545).

Almost surely, 2^42128890206 is an apocalyptic number.

42128890206 is an abundant number, since it is smaller than the sum of its proper divisors (49108826874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42128890206 is a wasteful number, since it uses less digits than its factorization.

42128890206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41547260 (or 41547247 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The spelling of 42128890206 in words is "forty-two billion, one hundred twenty-eight million, eight hundred ninety thousand, two hundred six".