7429000121 has 2 divisors, whose sum is σ = 7429000122. Its totient is φ = 7429000120.

The previous prime is 7429000109. The next prime is 7429000127. The reversal of 7429000121 is 1210009247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4517318521 + 2911681600 = 67211^2 + 53960^2 .

It is an emirp because it is prime and its reverse (1210009247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7429000121 - 2³⁰ = 6355258297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (7429000127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3714500060 + 3714500061.

It is an arithmetic number, because the mean of its divisors is an integer number (3714500061).

Almost surely, 2^7429000121 is an apocalyptic number.

It is an amenable number.

7429000121 is a deficient number, since it is larger than the sum of its proper divisors (1).

7429000121 is an equidigital number, since it uses as much as digits as its factorization.

7429000121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 7429000121 is about 86191.6476289901. The cubic root of 7429000121 is about 1951.2374456424.

Adding to 7429000121 its reverse (1210009247), we get a palindrome (8639009368).

The spelling of 7429000121 in words is "seven billion, four hundred twenty-nine million, one hundred twenty-one", and thus it is an aban number.