42805534 has 8 divisors (see below), whose sum is σ = 64446048. Its totient is φ = 21323520.

The previous prime is 42805487. The next prime is 42805561. The reversal of 42805534 is 43550824.

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

It is a junction number, because it is equal to n+sod(n) for n = 42805496 and 42805505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38947 + ... + 40030.

It is an arithmetic number, because the mean of its divisors is an integer number (8055756).

Almost surely, 2^42805534 is an apocalyptic number.

42805534 is a deficient number, since it is larger than the sum of its proper divisors (21640514).

42805534 is a wasteful number, since it uses less digits than its factorization.

42805534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79250.

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 42805534 is about 6542.5938281388. The cubic root of 42805534 is about 349.8108746938.

The spelling of 42805534 in words is "forty-two million, eight hundred five thousand, five hundred thirty-four".