4155121141 has 2 divisors, whose sum is σ = 4155121142. Its totient is φ = 4155121140.

The previous prime is 4155121133. The next prime is 4155121169. The reversal of 4155121141 is 1411215514.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2478546225 + 1676574916 = 49785^2 + 40946^2 .

It is a cyclic number.

It is not a de Polignac number, because 4155121141 - 2³ = 4155121133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4155121541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2077560570 + 2077560571.

It is an arithmetic number, because the mean of its divisors is an integer number (2077560571).

Almost surely, 2^4155121141 is an apocalyptic number.

It is an amenable number.

4155121141 is a deficient number, since it is larger than the sum of its proper divisors (1).

4155121141 is an equidigital number, since it uses as much as digits as its factorization.

4155121141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 800, while the sum is 25.

The square root of 4155121141 is about 64460.2291416964. The cubic root of 4155121141 is about 1607.6613217742.

Adding to 4155121141 its reverse (1411215514), we get a palindrome (5566336655).

The spelling of 4155121141 in words is "four billion, one hundred fifty-five million, one hundred twenty-one thousand, one hundred forty-one".