4145321121 has 8 divisors (see below), whose sum is σ = 5577802560. Its totient is φ = 2738193552.

The previous prime is 4145321107. The next prime is 4145321153. The reversal of 4145321121 is 1211235414.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4145321121 - 2¹⁰ = 4145320097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4145321091 and 4145321100.

It is not an unprimeable number, because it can be changed into a prime (4145321221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6338085 + ... + 6338738.

It is an arithmetic number, because the mean of its divisors is an integer number (697225320).

Almost surely, 2^4145321121 is an apocalyptic number.

It is an amenable number.

4145321121 is a deficient number, since it is larger than the sum of its proper divisors (1432481439).

4145321121 is a wasteful number, since it uses less digits than its factorization.

4145321121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12676935.

The product of its digits is 960, while the sum is 24.

The square root of 4145321121 is about 64384.1682481027. The cubic root of 4145321121 is about 1606.3964155551.

Adding to 4145321121 its reverse (1211235414), we get a palindrome (5356556535).

The spelling of 4145321121 in words is "four billion, one hundred forty-five million, three hundred twenty-one thousand, one hundred twenty-one".