78825242 has 8 divisors (see below), whose sum is σ = 118311732. Its totient is φ = 39388000.

The previous prime is 78825223. The next prime is 78825269. The reversal of 78825242 is 24252887.

It is a happy number.

78825242 is an esthetic number in base 8, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 2 ways, for example, as 63856081 + 14969161 = 7991^2 + 3869^2 .

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 = 78825196 and 78825205.

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, 8009 + ... + 14892.

Almost surely, 2^78825242 is an apocalyptic number.

78825242 is a deficient number, since it is larger than the sum of its proper divisors (39486490).

78825242 is a wasteful number, since it uses less digits than its factorization.

78825242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24624.

The product of its digits is 71680, while the sum is 38.

The square root of 78825242 is about 8878.3580689224. The cubic root of 78825242 is about 428.7674130405.

The spelling of 78825242 in words is "seventy-eight million, eight hundred twenty-five thousand, two hundred forty-two".