4640121 has 12 divisors (see below), whose sum is σ = 6745648. Its totient is φ = 3073464.

The previous prime is 4640117. The next prime is 4640131. The reversal of 4640121 is 1210464.

4640121 is a `hidden beast` number, since 4 + 640 + 1 + 21 = 666.

It is not a de Polignac number, because 4640121 - 2² = 4640117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4640094 and 4640103.

It is not an unprimeable number, because it can be changed into a prime (4640131) 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 11 ways as a sum of consecutive naturals, for example, 115 + ... + 3048.

Almost surely, 2^4640121 is an apocalyptic number.

It is an amenable number.

4640121 is a deficient number, since it is larger than the sum of its proper divisors (2105527).

4640121 is a wasteful number, since it uses less digits than its factorization.

4640121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3332 (or 3329 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 4640121 is about 2154.0940090906. The cubic root of 4640121 is about 166.7924681312.

Adding to 4640121 its reverse (1210464), we get a palindrome (5850585).

It can be divided in two parts, 4640 and 121, that added together give a square (4761 = 69²).

The spelling of 4640121 in words is "four million, six hundred forty thousand, one hundred twenty-one".