4145042121 has 32 divisors (see below), whose sum is σ = 6152098176. Its totient is φ = 2461440000.

The previous prime is 4145042107. The next prime is 4145042141. The reversal of 4145042121 is 1212405414.

It is not a de Polignac number, because 4145042121 - 2⁵ = 4145042089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4145042091 and 4145042100.

It is not an unprimeable number, because it can be changed into a prime (4145042141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 316891 + ... + 329711.

It is an arithmetic number, because the mean of its divisors is an integer number (192253068).

Almost surely, 2^4145042121 is an apocalyptic number.

It is an amenable number.

4145042121 is a deficient number, since it is larger than the sum of its proper divisors (2007056055).

4145042121 is a wasteful number, since it uses less digits than its factorization.

4145042121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13033.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 4145042121 is about 64382.0015299307. The cubic root of 4145042121 is about 1606.3603753512.

Adding to 4145042121 its reverse (1212405414), we get a palindrome (5357447535).

The spelling of 4145042121 in words is "four billion, one hundred forty-five million, forty-two thousand, one hundred twenty-one".