5643140121 has 6 divisors (see below), whose sum is σ = 8151202410. Its totient is φ = 3762093408.

The previous prime is 5643140081. The next prime is 5643140147. The reversal of 5643140121 is 1210413465.

It is a happy number.

5643140121 is a `hidden beast` number, since 5 + 643 + 1 + 4 + 0 + 12 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4725050121 + 918090000 = 68739^2 + 30300^2 .

It is not a de Polignac number, because 5643140121 - 2¹⁴ = 5643123737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5643140171) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 313507776 + ... + 313507793.

It is an arithmetic number, because the mean of its divisors is an integer number (1358533735).

Almost surely, 2^5643140121 is an apocalyptic number.

It is an amenable number.

5643140121 is a deficient number, since it is larger than the sum of its proper divisors (2508062289).

5643140121 is a wasteful number, since it uses less digits than its factorization.

5643140121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627015575 (or 627015572 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 5643140121 is about 75120.8367964575. The cubic root of 5643140121 is about 1780.3563778508.

Adding to 5643140121 its reverse (1210413465), we get a palindrome (6853553586).

The spelling of 5643140121 in words is "five billion, six hundred forty-three million, one hundred forty thousand, one hundred twenty-one".