70123 has 2 divisors, whose sum is σ = 70124. Its totient is φ = 70122.

The previous prime is 70121. The next prime is 70139. The reversal of 70123 is 32107.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70123 - 2¹ = 70121 is a prime.

Together with 70121, it forms a pair of twin primes.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (70121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35061 + 35062.

It is an arithmetic number, because the mean of its divisors is an integer number (35062).

2⁷⁰¹²³ is an apocalyptic number.

70123 is a deficient number, since it is larger than the sum of its proper divisors (1).

70123 is an equidigital number, since it uses as much as digits as its factorization.

70123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42, while the sum is 13.

The square root of 70123 is about 264.8074772358. The cubic root of 70123 is about 41.2369778301.

The spelling of 70123 in words is "seventy thousand, one hundred twenty-three", and thus it is an iban number.