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76122121 is a prime number
BaseRepresentation
bin1001000100110…
…00100000001001
312022020101220211
410202120200021
5123441401441
611315321121
71613012245
oct442304011
9168211824
1076122121
1139a72749
12215b01a1
1312a0329a
14a177425
156a39a81
hex4898809

76122121 has 2 divisors, whose sum is σ = 76122122. Its totient is φ = 76122120.

The previous prime is 76122103. The next prime is 76122131. The reversal of 76122121 is 12122167.

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., 71233600 + 4888521 = 8440^2 + 2211^2 .

It is an emirp because it is prime and its reverse (12122167) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76122121 - 25 = 76122089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 76122092 and 76122101.

It is not a weakly prime, because it can be changed into another prime (76122131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38061060 + 38061061.

It is an arithmetic number, because the mean of its divisors is an integer number (38061061).

Almost surely, 276122121 is an apocalyptic number.

It is an amenable number.

76122121 is a deficient number, since it is larger than the sum of its proper divisors (1).

76122121 is an equidigital number, since it uses as much as digits as its factorization.

76122121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336, while the sum is 22.

The square root of 76122121 is about 8724.7991953970. The cubic root of 76122121 is about 423.8091155275.

Adding to 76122121 its reverse (12122167), we get a palindrome (88244288).

The spelling of 76122121 in words is "seventy-six million, one hundred twenty-two thousand, one hundred twenty-one".