78834942 has 12 divisors (see below), whose sum is σ = 170809080. Its totient is φ = 26278308.

The previous prime is 78834941. The next prime is 78834949. The reversal of 78834942 is 24943887.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78834941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2189842 + ... + 2189877.

It is an arithmetic number, because the mean of its divisors is an integer number (14234090).

Almost surely, 2^78834942 is an apocalyptic number.

78834942 is an abundant number, since it is smaller than the sum of its proper divisors (91974138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78834942 is a wasteful number, since it uses less digits than its factorization.

78834942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4379727 (or 4379724 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 78834942 is about 8878.9043242959. The cubic root of 78834942 is about 428.7849999336.

The spelling of 78834942 in words is "seventy-eight million, eight hundred thirty-four thousand, nine hundred forty-two".