7860250121 has 2 divisors, whose sum is σ = 7860250122. Its totient is φ = 7860250120.

The previous prime is 7860250109. The next prime is 7860250127. The reversal of 7860250121 is 1210520687.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7857049600 + 3200521 = 88640^2 + 1789^2 .

It is an emirp because it is prime and its reverse (1210520687) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7860250121 - 2³⁰ = 6786508297 is a prime.

It is not a weakly prime, because it can be changed into another prime (7860250127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3930125060 + 3930125061.

It is an arithmetic number, because the mean of its divisors is an integer number (3930125061).

Almost surely, 2^7860250121 is an apocalyptic number.

It is an amenable number.

7860250121 is a deficient number, since it is larger than the sum of its proper divisors (1).

7860250121 is an equidigital number, since it uses as much as digits as its factorization.

7860250121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 7860250121 is about 88658.0516422507. The cubic root of 7860250121 is about 1988.2856982753.

The spelling of 7860250121 in words is "seven billion, eight hundred sixty million, two hundred fifty thousand, one hundred twenty-one".