42506706 has 64 divisors (see below), whose sum is σ = 96546816. Its totient is φ = 12364800.

The previous prime is 42506701. The next prime is 42506719. The reversal of 42506706 is 60760524.

It is not an unprimeable number, because it can be changed into a prime (42506701) 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 31 ways as a sum of consecutive naturals, for example, 220146 + ... + 220338.

It is an arithmetic number, because the mean of its divisors is an integer number (1508544).

Almost surely, 2^42506706 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42506706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48273408).

42506706 is an abundant number, since it is smaller than the sum of its proper divisors (54040110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42506706 is a wasteful number, since it uses less digits than its factorization.

42506706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 42506706 is about 6519.7167116371. The cubic root of 42506706 is about 348.9949561809.

The spelling of 42506706 in words is "forty-two million, five hundred six thousand, seven hundred six".