42044117 has 2 divisors, whose sum is σ = 42044118. Its totient is φ = 42044116.

The previous prime is 42044089. The next prime is 42044159. The reversal of 42044117 is 71144024.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35688676 + 6355441 = 5974^2 + 2521^2 .

It is a cyclic number.

It is not a de Polignac number, because 42044117 - 2⁶ = 42044053 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42044092 and 42044101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42044917) 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 as a sum of consecutive naturals, namely, 21022058 + 21022059.

It is an arithmetic number, because the mean of its divisors is an integer number (21022059).

Almost surely, 2^42044117 is an apocalyptic number.

It is an amenable number.

42044117 is a deficient number, since it is larger than the sum of its proper divisors (1).

42044117 is an equidigital number, since it uses as much as digits as its factorization.

42044117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 42044117 is about 6484.1435055063. The cubic root of 42044117 is about 347.7243297307.

The spelling of 42044117 in words is "forty-two million, forty-four thousand, one hundred seventeen".