42705558 has 48 divisors (see below), whose sum is σ = 107920800. Its totient is φ = 12199824.

The previous prime is 42705541. The next prime is 42705571. The reversal of 42705558 is 85550724.

It is a happy number.

It is a super-3 number, since 3×42705558³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2716 + ... + 9632.

It is an arithmetic number, because the mean of its divisors is an integer number (2248350).

Almost surely, 2^42705558 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42705558, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53960400).

42705558 is an abundant number, since it is smaller than the sum of its proper divisors (65215242).

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

42705558 is a wasteful number, since it uses less digits than its factorization.

42705558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6946 (or 6929 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The square root of 42705558 is about 6534.9489669010. The cubic root of 42705558 is about 349.5383246178.

It can be divided in two parts, 42 and 705558, that added together give a square (705600 = 840²).

The spelling of 42705558 in words is "forty-two million, seven hundred five thousand, five hundred fifty-eight".