78141242 has 8 divisors (see below), whose sum is σ = 117464256. Its totient is φ = 38986492.

The previous prime is 78141241. The next prime is 78141247. The reversal of 78141242 is 24214187.

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

It is a super-2 number, since 2×78141242² = 12212107402605128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78141241) by changing a digit.

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, 40898 + ... + 42765.

It is an arithmetic number, because the mean of its divisors is an integer number (14683032).

Almost surely, 2^78141242 is an apocalyptic number.

78141242 is a deficient number, since it is larger than the sum of its proper divisors (39323014).

78141242 is a wasteful number, since it uses less digits than its factorization.

78141242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84132.

The product of its digits is 3584, while the sum is 29.

The square root of 78141242 is about 8839.7535033506. The cubic root of 78141242 is about 427.5236096077.

The spelling of 78141242 in words is "seventy-eight million, one hundred forty-one thousand, two hundred forty-two".