4102121545 has 8 divisors (see below), whose sum is σ = 5042608200. Its totient is φ = 3201655680.

The previous prime is 4102121521. The next prime is 4102121549. The reversal of 4102121545 is 5451212014.

It can be written as a sum of positive squares in 4 ways, for example, as 157276681 + 3944844864 = 12541^2 + 62808^2 .

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

It is not a de Polignac number, because 4102121545 - 2²¹ = 4100024393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4102121549) 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 7 ways as a sum of consecutive naturals, for example, 10004970 + ... + 10005379.

It is an arithmetic number, because the mean of its divisors is an integer number (630326025).

Almost surely, 2^4102121545 is an apocalyptic number.

It is an amenable number.

4102121545 is a deficient number, since it is larger than the sum of its proper divisors (940486655).

4102121545 is a wasteful number, since it uses less digits than its factorization.

4102121545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20010395.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 4102121545 is about 64047.8067149844. The cubic root of 4102121545 is about 1600.7966794197.

Adding to 4102121545 its reverse (5451212014), we get a palindrome (9553333559).

The spelling of 4102121545 in words is "four billion, one hundred two million, one hundred twenty-one thousand, five hundred forty-five".