42719818 has 8 divisors (see below), whose sum is σ = 64108800. Its totient is φ = 21350220.

The previous prime is 42719797. The next prime is 42719821. The reversal of 42719818 is 81891724.

It is a happy number.

42719818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3633 + ... + 9931.

It is an arithmetic number, because the mean of its divisors is an integer number (8013600).

Almost surely, 2^42719818 is an apocalyptic number.

42719818 is a deficient number, since it is larger than the sum of its proper divisors (21388982).

42719818 is a wasteful number, since it uses less digits than its factorization.

42719818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9692.

The product of its digits is 32256, while the sum is 40.

The square root of 42719818 is about 6536.0399325586. The cubic root of 42719818 is about 349.5772255794.

The spelling of 42719818 in words is "forty-two million, seven hundred nineteen thousand, eight hundred eighteen".