4665042121 has 4 divisors (see below), whose sum is σ = 4669621200. Its totient is φ = 4660463044.

The previous prime is 4665042119. The next prime is 4665042133. The reversal of 4665042121 is 1212405664.

It is a happy number.

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 4665042121 - 2¹ = 4665042119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4665042721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2288011 + ... + 2290048.

It is an arithmetic number, because the mean of its divisors is an integer number (1167405300).

Almost surely, 2^4665042121 is an apocalyptic number.

It is an amenable number.

4665042121 is a deficient number, since it is larger than the sum of its proper divisors (4579079).

4665042121 is a wasteful number, since it uses less digits than its factorization.

4665042121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4579078.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 4665042121 is about 68301.1136146403. The cubic root of 4665042121 is about 1670.9053764958.

Adding to 4665042121 its reverse (1212405664), we get a palindrome (5877447785).

The spelling of 4665042121 in words is "four billion, six hundred sixty-five million, forty-two thousand, one hundred twenty-one".