42473117 has 4 divisors (see below), whose sum is σ = 42649596. Its totient is φ = 42296640.

The previous prime is 42473107. The next prime is 42473159. The reversal of 42473117 is 71137424.

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 38204761 + 4268356 = 6181^2 + 2066^2 .

It is a cyclic number.

It is not a de Polignac number, because 42473117 - 2¹⁰ = 42472093 is a prime.

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 42473117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42473107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87878 + ... + 88359.

It is an arithmetic number, because the mean of its divisors is an integer number (10662399).

Almost surely, 2^42473117 is an apocalyptic number.

It is an amenable number.

42473117 is a deficient number, since it is larger than the sum of its proper divisors (176479).

42473117 is a wasteful number, since it uses less digits than its factorization.

42473117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176478.

The product of its digits is 4704, while the sum is 29.

The square root of 42473117 is about 6517.1402470716. The cubic root of 42473117 is about 348.9030061355.

The spelling of 42473117 in words is "forty-two million, four hundred seventy-three thousand, one hundred seventeen".