42089204093 has 4 divisors (see below), whose sum is σ = 42505928988. Its totient is φ = 41672479200.

The previous prime is 42089204089. The next prime is 42089204191. The reversal of 42089204093 is 39040298024.

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

It can be written as a sum of positive squares in 2 ways, for example, as 40277680249 + 1811523844 = 200693^2 + 42562^2 .

It is a cyclic number.

It is not a de Polignac number, because 42089204093 - 2² = 42089204089 is a prime.

It is a super-2 number, since 2×42089204093² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42089204093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42089204063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208362296 + ... + 208362497.

It is an arithmetic number, because the mean of its divisors is an integer number (10626482247).

Almost surely, 2^42089204093 is an apocalyptic number.

It is an amenable number.

42089204093 is a deficient number, since it is larger than the sum of its proper divisors (416724895).

42089204093 is a wasteful number, since it uses less digits than its factorization.

42089204093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416724894.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 42089204093 in words is "forty-two billion, eighty-nine million, two hundred four thousand, ninety-three".