76500121 has 2 divisors, whose sum is σ = 76500122. Its totient is φ = 76500120.

The previous prime is 76500113. The next prime is 76500133. The reversal of 76500121 is 12100567.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55294096 + 21206025 = 7436^2 + 4605^2 .

It is an emirp because it is prime and its reverse (12100567) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76500121 - 2³ = 76500113 is a prime.

It is a super-3 number, since 3×76500121³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 76500092 and 76500101.

It is not a weakly prime, because it can be changed into another prime (76500421) 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, 38250060 + 38250061.

It is an arithmetic number, because the mean of its divisors is an integer number (38250061).

Almost surely, 2^76500121 is an apocalyptic number.

It is an amenable number.

76500121 is a deficient number, since it is larger than the sum of its proper divisors (1).

76500121 is an equidigital number, since it uses as much as digits as its factorization.

76500121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 76500121 is about 8746.4347593748. The cubic root of 76500121 is about 424.5094612540.

Adding to 76500121 its reverse (12100567), we get a palindrome (88600688).

The spelling of 76500121 in words is "seventy-six million, five hundred thousand, one hundred twenty-one".