78982123 has 4 divisors (see below), whose sum is σ = 86162328. Its totient is φ = 71801920.

The previous prime is 78982121. The next prime is 78982159. The reversal of 78982123 is 32128987.

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

It is a cyclic number.

It is not a de Polignac number, because 78982123 - 2¹ = 78982121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78982121) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3590086 + ... + 3590107.

It is an arithmetic number, because the mean of its divisors is an integer number (21540582).

Almost surely, 2^78982123 is an apocalyptic number.

78982123 is a deficient number, since it is larger than the sum of its proper divisors (7180205).

78982123 is a wasteful number, since it uses less digits than its factorization.

78982123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7180204.

The product of its digits is 48384, while the sum is 40.

The square root of 78982123 is about 8887.1887005959. The cubic root of 78982123 is about 429.0516742887.

The spelling of 78982123 in words is "seventy-eight million, nine hundred eighty-two thousand, one hundred twenty-three".