8740121 has 4 divisors (see below), whose sum is σ = 9412452. Its totient is φ = 8067792.

The previous prime is 8740117. The next prime is 8740129. The reversal of 8740121 is 1210478.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1210478 = 2 ⋅605239.

It can be written as a sum of positive squares in 2 ways, for example, as 697225 + 8042896 = 835^2 + 2836^2 .

It is a cyclic number.

It is not a de Polignac number, because 8740121 - 2² = 8740117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8740129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336146 + ... + 336171.

It is an arithmetic number, because the mean of its divisors is an integer number (2353113).

Almost surely, 2^8740121 is an apocalyptic number.

It is an amenable number.

8740121 is a deficient number, since it is larger than the sum of its proper divisors (672331).

8740121 is a wasteful number, since it uses less digits than its factorization.

8740121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672330.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 8740121 is about 2956.3695641783. The cubic root of 8740121 is about 205.9866849722.

Adding to 8740121 its reverse (1210478), we get a palindrome (9950599).

The spelling of 8740121 in words is "eight million, seven hundred forty thousand, one hundred twenty-one".