42758918 has 4 divisors (see below), whose sum is σ = 64138380. Its totient is φ = 21379458.

The previous prime is 42758917. The next prime is 42758921. The reversal of 42758918 is 81985724.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42758917) 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 as a sum of consecutive naturals, namely, 10689728 + ... + 10689731.

It is an arithmetic number, because the mean of its divisors is an integer number (16034595).

Almost surely, 2^42758918 is an apocalyptic number.

42758918 is a deficient number, since it is larger than the sum of its proper divisors (21379462).

42758918 is a wasteful number, since it uses less digits than its factorization.

42758918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21379461.

The product of its digits is 161280, while the sum is 44.

The square root of 42758918 is about 6539.0303562531. The cubic root of 42758918 is about 349.6838451156.

The spelling of 42758918 in words is "forty-two million, seven hundred fifty-eight thousand, nine hundred eighteen".