42884775 has 24 divisors (see below), whose sum is σ = 78782160. Its totient is φ = 22871520.

The previous prime is 42884773. The next prime is 42884789. The reversal of 42884775 is 57748824.

It is not a de Polignac number, because 42884775 - 2¹ = 42884773 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 42884775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42884773) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31092 + ... + 32441.

It is an arithmetic number, because the mean of its divisors is an integer number (3282590).

Almost surely, 2^42884775 is an apocalyptic number.

42884775 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42884775 is a deficient number, since it is larger than the sum of its proper divisors (35897385).

42884775 is a wasteful number, since it uses less digits than its factorization.

42884775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63552 (or 63541 counting only the distinct ones).

The product of its digits is 501760, while the sum is 45.

The square root of 42884775 is about 6548.6468067838. The cubic root of 42884775 is about 350.0265966183.

The spelling of 42884775 in words is "forty-two million, eight hundred eighty-four thousand, seven hundred seventy-five".