42530775 has 72 divisors (see below), whose sum is σ = 83458944. Its totient is φ = 19051200.

The previous prime is 42530743. The next prime is 42530779. The reversal of 42530775 is 57703524.

It is not a de Polignac number, because 42530775 - 2⁵ = 42530743 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42530779) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 260844 + ... + 261006.

It is an arithmetic number, because the mean of its divisors is an integer number (1159152).

Almost surely, 2^42530775 is an apocalyptic number.

42530775 is the 5325-th pentagonal number.

42530775 is a deficient number, since it is larger than the sum of its proper divisors (40928169).

42530775 is a wasteful number, since it uses less digits than its factorization.

42530775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 33.

The square root of 42530775 is about 6521.5623128204. The cubic root of 42530775 is about 349.0608153941.

The spelling of 42530775 in words is "forty-two million, five hundred thirty thousand, seven hundred seventy-five".