76800121 has 4 divisors (see below), whose sum is σ = 76853392. Its totient is φ = 76746852.

The previous prime is 76800029. The next prime is 76800131. The reversal of 76800121 is 12100867.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 76800121 - 2⁹ = 76799609 is a prime.

It is a super-2 number, since 2×76800121² = 11796517171229282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76800131) 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 in 3 ways as a sum of consecutive naturals, for example, 24411 + ... + 27376.

It is an arithmetic number, because the mean of its divisors is an integer number (19213348).

Almost surely, 2^76800121 is an apocalyptic number.

It is an amenable number.

76800121 is a deficient number, since it is larger than the sum of its proper divisors (53271).

76800121 is a wasteful number, since it uses less digits than its factorization.

76800121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53270.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 76800121 is about 8763.5678236663. The cubic root of 76800121 is about 425.0636509050.

Adding to 76800121 its reverse (12100867), we get a palindrome (88900988).

The spelling of 76800121 in words is "seventy-six million, eight hundred thousand, one hundred twenty-one".