42754978 has 32 divisors (see below), whose sum is σ = 78336000. Its totient is φ = 17092944.

The previous prime is 42754967. The next prime is 42754979. The reversal of 42754978 is 87945724.

It is not an unprimeable number, because it can be changed into a prime (42754979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16623 + ... + 19021.

It is an arithmetic number, because the mean of its divisors is an integer number (2448000).

Almost surely, 2^42754978 is an apocalyptic number.

42754978 is a deficient number, since it is larger than the sum of its proper divisors (35581022).

42754978 is a wasteful number, since it uses less digits than its factorization.

42754978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2494.

The product of its digits is 564480, while the sum is 46.

The square root of 42754978 is about 6538.7290814041. The cubic root of 42754978 is about 349.6731043023.

The spelling of 42754978 in words is "forty-two million, seven hundred fifty-four thousand, nine hundred seventy-eight".