78078342 has 8 divisors (see below), whose sum is σ = 156156696. Its totient is φ = 26026112.

The previous prime is 78078323. The next prime is 78078359. The reversal of 78078342 is 24387087.

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

78078342 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 78078342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6506523 + ... + 6506534.

It is an arithmetic number, because the mean of its divisors is an integer number (19519587).

Almost surely, 2^78078342 is an apocalyptic number.

78078342 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78078342 is a wasteful number, since it uses less digits than its factorization.

78078342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13013062.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 78078342 is about 8836.1949955849. The cubic root of 78078342 is about 427.4088667268.

The spelling of 78078342 in words is "seventy-eight million, seventy-eight thousand, three hundred forty-two".