42042205 has 8 divisors (see below), whose sum is σ = 51524352. Its totient is φ = 32917968.

The previous prime is 42042191. The next prime is 42042211. The reversal of 42042205 is 50224024.

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

It is a cyclic number.

It is not a de Polignac number, because 42042205 - 2¹¹ = 42040157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 89217 + ... + 89686.

It is an arithmetic number, because the mean of its divisors is an integer number (6440544).

Almost surely, 2^42042205 is an apocalyptic number.

It is an amenable number.

42042205 is a deficient number, since it is larger than the sum of its proper divisors (9482147).

42042205 is a wasteful number, since it uses less digits than its factorization.

42042205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178955.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 42042205 is about 6483.9960672413. The cubic root of 42042205 is about 347.7190586088.

Adding to 42042205 its reverse (50224024), we get a palindrome (92266229).

The spelling of 42042205 in words is "forty-two million, forty-two thousand, two hundred five".