103078121 has 2 divisors, whose sum is σ = 103078122. Its totient is φ = 103078120.

The previous prime is 103078067. The next prime is 103078147. The reversal of 103078121 is 121870301.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82101721 + 20976400 = 9061^2 + 4580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103078121 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

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

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (103078621) 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, 51539060 + 51539061.

It is an arithmetic number, because the mean of its divisors is an integer number (51539061).

Almost surely, 2^103078121 is an apocalyptic number.

It is an amenable number.

103078121 is a deficient number, since it is larger than the sum of its proper divisors (1).

103078121 is an equidigital number, since it uses as much as digits as its factorization.

103078121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 103078121 is about 10152.7395810195. The cubic root of 103078121 is about 468.8732948322.

The spelling of 103078121 in words is "one hundred three million, seventy-eight thousand, one hundred twenty-one".