78094942 has 4 divisors (see below), whose sum is σ = 117142416. Its totient is φ = 39047470.

The previous prime is 78094931. The next prime is 78094943. The reversal of 78094942 is 24949087.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78094943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19523734 + ... + 19523737.

It is an arithmetic number, because the mean of its divisors is an integer number (29285604).

Almost surely, 2^78094942 is an apocalyptic number.

78094942 is a deficient number, since it is larger than the sum of its proper divisors (39047474).

78094942 is a wasteful number, since it uses less digits than its factorization.

78094942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39047473.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 78094942 is about 8837.1342640021. The cubic root of 78094942 is about 427.4391546157.

The spelling of 78094942 in words is "seventy-eight million, ninety-four thousand, nine hundred forty-two".