807500121 has 16 divisors (see below), whose sum is σ = 1122201600. Its totient is φ = 515903760.

The previous prime is 807500117. The next prime is 807500129. The reversal of 807500121 is 121005708.

It is not a de Polignac number, because 807500121 - 2² = 807500117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 807500091 and 807500100.

It is not an unprimeable number, because it can be changed into a prime (807500129) 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 15 ways as a sum of consecutive naturals, for example, 32571 + ... + 51728.

It is an arithmetic number, because the mean of its divisors is an integer number (70137600).

Almost surely, 2^807500121 is an apocalyptic number.

It is an amenable number.

807500121 is a deficient number, since it is larger than the sum of its proper divisors (314701479).

807500121 is a wasteful number, since it uses less digits than its factorization.

807500121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84436.

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 807500121 is about 28416.5466058070. The cubic root of 807500121 is about 931.2097875764.

Adding to 807500121 its reverse (121005708), we get a palindrome (928505829).

The spelling of 807500121 in words is "eight hundred seven million, five hundred thousand, one hundred twenty-one".