78970123 has 4 divisors (see below), whose sum is σ = 79039768. Its totient is φ = 78900480.

The previous prime is 78970121. The next prime is 78970127. The reversal of 78970123 is 32107987.

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 78970123 - 2¹ = 78970121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78970121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33093 + ... + 35398.

It is an arithmetic number, because the mean of its divisors is an integer number (19759942).

Almost surely, 2^78970123 is an apocalyptic number.

78970123 is a deficient number, since it is larger than the sum of its proper divisors (69645).

78970123 is a wasteful number, since it uses less digits than its factorization.

78970123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69644.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 78970123 is about 8886.5135458176. The cubic root of 78970123 is about 429.0299441356.

The spelling of 78970123 in words is "seventy-eight million, nine hundred seventy thousand, one hundred twenty-three".