68428123 has 2 divisors, whose sum is σ = 68428124. Its totient is φ = 68428122.

The previous prime is 68428121. The next prime is 68428169. The reversal of 68428123 is 32182486.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68428123 - 2¹ = 68428121 is a prime.

Together with 68428121, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (68428121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34214061 + 34214062.

It is an arithmetic number, because the mean of its divisors is an integer number (34214062).

Almost surely, 2^68428123 is an apocalyptic number.

68428123 is a deficient number, since it is larger than the sum of its proper divisors (1).

68428123 is an equidigital number, since it uses as much as digits as its factorization.

68428123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 34.

The square root of 68428123 is about 8272.1292905757. The cubic root of 68428123 is about 409.0203121170.

The spelling of 68428123 in words is "sixty-eight million, four hundred twenty-eight thousand, one hundred twenty-three".