70243123 has 4 divisors (see below), whose sum is σ = 71876728. Its totient is φ = 68609520.

The previous prime is 70243097. The next prime is 70243139. The reversal of 70243123 is 32134207.

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 70243123 - 2⁵ = 70243091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70243094 and 70243103.

It is not an unprimeable number, because it can be changed into a prime (70243153) 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, 816738 + ... + 816823.

It is an arithmetic number, because the mean of its divisors is an integer number (17969182).

Almost surely, 2^70243123 is an apocalyptic number.

70243123 is a deficient number, since it is larger than the sum of its proper divisors (1633605).

70243123 is a wasteful number, since it uses less digits than its factorization.

70243123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1633604.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 70243123 is about 8381.1170496539. The cubic root of 70243123 is about 412.6051116280.

The spelling of 70243123 in words is "seventy million, two hundred forty-three thousand, one hundred twenty-three".