78015041 has 4 divisors (see below), whose sum is σ = 84016212. Its totient is φ = 72013872.

The previous prime is 78015019. The next prime is 78015043. The reversal of 78015041 is 14051087.

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

It can be written as a sum of positive squares in 2 ways, for example, as 22363441 + 55651600 = 4729^2 + 7460^2 .

It is a cyclic number.

It is not a de Polignac number, because 78015041 - 2⁶ = 78014977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78015041.

It is not an unprimeable number, because it can be changed into a prime (78015043) 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 in 3 ways as a sum of consecutive naturals, for example, 3000566 + ... + 3000591.

It is an arithmetic number, because the mean of its divisors is an integer number (21004053).

Almost surely, 2^78015041 is an apocalyptic number.

It is an amenable number.

78015041 is a deficient number, since it is larger than the sum of its proper divisors (6001171).

78015041 is a wasteful number, since it uses less digits than its factorization.

78015041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6001170.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 78015041 is about 8832.6123542245. The cubic root of 78015041 is about 427.2933301052.

The spelling of 78015041 in words is "seventy-eight million, fifteen thousand, forty-one".