42974775 has 36 divisors (see below), whose sum is σ = 77327640. Its totient is φ = 22814400.

The previous prime is 42974749. The next prime is 42974777. The reversal of 42974775 is 57747924.

It is not a de Polignac number, because 42974775 - 2¹⁹ = 42450487 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 42974775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42974777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 87280 + ... + 87770.

It is an arithmetic number, because the mean of its divisors is an integer number (2147990).

Almost surely, 2^42974775 is an apocalyptic number.

42974775 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42974775 is a deficient number, since it is larger than the sum of its proper divisors (34352865).

42974775 is a wasteful number, since it uses less digits than its factorization.

42974775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896 (or 888 counting only the distinct ones).

The product of its digits is 493920, while the sum is 45.

The square root of 42974775 is about 6555.5148539226. The cubic root of 42974775 is about 350.2712862693.

The spelling of 42974775 in words is "forty-two million, nine hundred seventy-four thousand, seven hundred seventy-five".