76224121 has 2 divisors, whose sum is σ = 76224122. Its totient is φ = 76224120.

The previous prime is 76224097. The next prime is 76224163. The reversal of 76224121 is 12142267.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75342400 + 881721 = 8680^2 + 939^2 .

It is a cyclic number.

It is not a de Polignac number, because 76224121 - 2¹³ = 76215929 is a prime.

It is not a weakly prime, because it can be changed into another prime (76224521) 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, 38112060 + 38112061.

It is an arithmetic number, because the mean of its divisors is an integer number (38112061).

Almost surely, 2^76224121 is an apocalyptic number.

It is an amenable number.

76224121 is a deficient number, since it is larger than the sum of its proper divisors (1).

76224121 is an equidigital number, since it uses as much as digits as its factorization.

76224121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 25.

The square root of 76224121 is about 8730.6426453040. The cubic root of 76224121 is about 423.9983256876.

Adding to 76224121 its reverse (12142267), we get a palindrome (88366388).

The spelling of 76224121 in words is "seventy-six million, two hundred twenty-four thousand, one hundred twenty-one".