1078123129 has 2 divisors, whose sum is σ = 1078123130. Its totient is φ = 1078123128.

The previous prime is 1078123117. The next prime is 1078123139. The reversal of 1078123129 is 9213218701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 563967504 + 514155625 = 23748^2 + 22675^2 .

It is a cyclic number.

It is not a de Polignac number, because 1078123129 - 2¹⁵ = 1078090361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1078123094 and 1078123103.

It is not a weakly prime, because it can be changed into another prime (1078123139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539061564 + 539061565.

It is an arithmetic number, because the mean of its divisors is an integer number (539061565).

Almost surely, 2^1078123129 is an apocalyptic number.

It is an amenable number.

1078123129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1078123129 is an equidigital number, since it uses as much as digits as its factorization.

1078123129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 1078123129 is about 32834.7853502958. The cubic root of 1078123129 is about 1025.3908892635.

The spelling of 1078123129 in words is "one billion, seventy-eight million, one hundred twenty-three thousand, one hundred twenty-nine".