76142321 has 2 divisors, whose sum is σ = 76142322. Its totient is φ = 76142320.

The previous prime is 76142299. The next prime is 76142323. The reversal of 76142321 is 12324167.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45495025 + 30647296 = 6745^2 + 5536^2 .

It is a cyclic number.

It is not a de Polignac number, because 76142321 - 2⁶ = 76142257 is a prime.

Together with 76142323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (76142323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38071160 + 38071161.

It is an arithmetic number, because the mean of its divisors is an integer number (38071161).

Almost surely, 2^76142321 is an apocalyptic number.

It is an amenable number.

76142321 is a deficient number, since it is larger than the sum of its proper divisors (1).

76142321 is an equidigital number, since it uses as much as digits as its factorization.

76142321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 26.

The square root of 76142321 is about 8725.9567383755. The cubic root of 76142321 is about 423.8465999753.

Adding to 76142321 its reverse (12324167), we get a palindrome (88466488).

The spelling of 76142321 in words is "seventy-six million, one hundred forty-two thousand, three hundred twenty-one".