42406106 has 8 divisors (see below), whose sum is σ = 63977364. Its totient is φ = 21080320.

The previous prime is 42406103. The next prime is 42406121. The reversal of 42406106 is 60160424.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 34515625 + 7890481 = 5875^2 + 2809^2 .

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

It is not an unprimeable number, because it can be changed into a prime (42406103) 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, 60935 + ... + 61626.

Almost surely, 2^42406106 is an apocalyptic number.

42406106 is a deficient number, since it is larger than the sum of its proper divisors (21571258).

42406106 is a wasteful number, since it uses less digits than its factorization.

42406106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122736.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 42406106 is about 6511.9970823089. The cubic root of 42406106 is about 348.7194182748.

The spelling of 42406106 in words is "forty-two million, four hundred six thousand, one hundred six".