76047121 has 2 divisors, whose sum is σ = 76047122. Its totient is φ = 76047120.

The previous prime is 76047109. The next prime is 76047149. The reversal of 76047121 is 12174067.

It is an a-pointer prime, because the next prime (76047149) can be obtained adding 76047121 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72437121 + 3610000 = 8511^2 + 1900^2 .

It is a cyclic number.

It is not a de Polignac number, because 76047121 - 2⁵ = 76047089 is a prime.

It is a super-2 number, since 2×76047121² = 11566329224777282, which contains 22 as substring.

It is the 8721-st Hogben number.

It is a self number, because there is not a number n which added to its sum of digits gives 76047121.

It is not a weakly prime, because it can be changed into another prime (76047151) by changing a digit.

It is a nontrivial repunit in base 8720.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38023560 + 38023561.

It is an arithmetic number, because the mean of its divisors is an integer number (38023561).

Almost surely, 2^76047121 is an apocalyptic number.

It is an amenable number.

76047121 is a deficient number, since it is larger than the sum of its proper divisors (1).

76047121 is an equidigital number, since it uses as much as digits as its factorization.

76047121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 76047121 is about 8720.5000430021. The cubic root of 76047121 is about 423.6698825512.

The spelling of 76047121 in words is "seventy-six million, forty-seven thousand, one hundred twenty-one".