78942435 has 96 divisors (see below), whose sum is σ = 158112000. Its totient is φ = 33246720.

The previous prime is 78942421. The next prime is 78942439. The reversal of 78942435 is 53424987.

It is not a de Polignac number, because 78942435 - 2⁹ = 78941923 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78942439) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 529741 + ... + 529889.

It is an arithmetic number, because the mean of its divisors is an integer number (1647000).

Almost surely, 2^78942435 is an apocalyptic number.

78942435 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

78942435 is a wasteful number, since it uses less digits than its factorization.

78942435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 200 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 78942435 is about 8884.9555429389. The cubic root of 78942435 is about 428.9797970284.

The spelling of 78942435 in words is "seventy-eight million, nine hundred forty-two thousand, four hundred thirty-five".