42071117 has 8 divisors (see below), whose sum is σ = 47891520. Its totient is φ = 36583360.

The previous prime is 42071089. The next prime is 42071137. The reversal of 42071117 is 71117024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42071117 - 2⁶ = 42071053 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 42071092 and 42071101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42071137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82892 + ... + 83397.

It is an arithmetic number, because the mean of its divisors is an integer number (5986440).

Almost surely, 2^42071117 is an apocalyptic number.

It is an amenable number.

42071117 is a deficient number, since it is larger than the sum of its proper divisors (5820403).

42071117 is a wasteful number, since it uses less digits than its factorization.

42071117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166323.

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 42071117 is about 6486.2251733963. The cubic root of 42071117 is about 347.7987479733.

The spelling of 42071117 in words is "forty-two million, seventy-one thousand, one hundred seventeen".