78442741 has 8 divisors (see below), whose sum is σ = 87202304. Its totient is φ = 70072560.

The previous prime is 78442723. The next prime is 78442751. The reversal of 78442741 is 14724487.

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

It is a cyclic number.

It is not a de Polignac number, because 78442741 - 2⁹ = 78442229 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 78442741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78442711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96921 + ... + 97726.

It is an arithmetic number, because the mean of its divisors is an integer number (10900288).

Almost surely, 2^78442741 is an apocalyptic number.

It is an amenable number.

78442741 is a deficient number, since it is larger than the sum of its proper divisors (8759563).

78442741 is a wasteful number, since it uses less digits than its factorization.

78442741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194691.

The product of its digits is 50176, while the sum is 37.

The square root of 78442741 is about 8856.7906715695. The cubic root of 78442741 is about 428.0727541765.

It can be divided in two parts, 7844 and 2741, that added together give a triangular number (10585 = T₁₄₅).

The spelling of 78442741 in words is "seventy-eight million, four hundred forty-two thousand, seven hundred forty-one".