40579142 has 8 divisors (see below), whose sum is σ = 62163936. Its totient is φ = 19857832.

The previous prime is 40579139. The next prime is 40579157. The reversal of 40579142 is 24197504.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 40579099 and 40579108.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 215753 + ... + 215940.

It is an arithmetic number, because the mean of its divisors is an integer number (7770492).

Almost surely, 2^40579142 is an apocalyptic number.

40579142 is a deficient number, since it is larger than the sum of its proper divisors (21584794).

40579142 is a wasteful number, since it uses less digits than its factorization.

40579142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431742.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 40579142 is about 6370.1759787309. The cubic root of 40579142 is about 343.6378185124.

The spelling of 40579142 in words is "forty million, five hundred seventy-nine thousand, one hundred forty-two".