5142190121 has 2 divisors, whose sum is σ = 5142190122. Its totient is φ = 5142190120.

The previous prime is 5142190103. The next prime is 5142190133. The reversal of 5142190121 is 1210912415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4122282025 + 1019908096 = 64205^2 + 31936^2 .

It is a cyclic number.

It is not a de Polignac number, because 5142190121 - 2²² = 5137995817 is a prime.

It is not a weakly prime, because it can be changed into another prime (5142190171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2571095060 + 2571095061.

It is an arithmetic number, because the mean of its divisors is an integer number (2571095061).

Almost surely, 2^5142190121 is an apocalyptic number.

It is an amenable number.

5142190121 is a deficient number, since it is larger than the sum of its proper divisors (1).

5142190121 is an equidigital number, since it uses as much as digits as its factorization.

5142190121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 5142190121 is about 71709.0658215543. The cubic root of 5142190121 is about 1726.0341200842.

The spelling of 5142190121 in words is "five billion, one hundred forty-two million, one hundred ninety thousand, one hundred twenty-one".