42705726 has 32 divisors (see below), whose sum is σ = 97839360. Its totient is φ = 12173376.

The previous prime is 42705721. The next prime is 42705739. The reversal of 42705726 is 62750724.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42705721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23005 + ... + 24791.

It is an arithmetic number, because the mean of its divisors is an integer number (3057480).

Almost surely, 2^42705726 is an apocalyptic number.

42705726 is an abundant number, since it is smaller than the sum of its proper divisors (55133634).

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

42705726 is a wasteful number, since it uses less digits than its factorization.

42705726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2368.

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 42705726 is about 6534.9618208525. The cubic root of 42705726 is about 349.5387829684.

The spelling of 42705726 in words is "forty-two million, seven hundred five thousand, seven hundred twenty-six".