2002143501 has 20 divisors (see below), whose sum is σ = 3018308700. Its totient is φ = 1322510976.

The previous prime is 2002143497. The next prime is 2002143527. The reversal of 2002143501 is 1053412002.

2002143501 is a `hidden beast` number, since 20 + 0 + 2 + 143 + 501 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 699655401 + 1302488100 = 26451^2 + 36090^2 .

It is not a de Polignac number, because 2002143501 - 2² = 2002143497 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002143541) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 104556 + ... + 122213.

It is an arithmetic number, because the mean of its divisors is an integer number (150915435).

Almost surely, 2^2002143501 is an apocalyptic number.

It is an amenable number.

2002143501 is a deficient number, since it is larger than the sum of its proper divisors (1016165199).

2002143501 is a wasteful number, since it uses less digits than its factorization.

2002143501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226890 (or 226881 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2002143501 is about 44745.3182020198. The cubic root of 2002143501 is about 1260.3709961948.

Adding to 2002143501 its reverse (1053412002), we get a palindrome (3055555503).

The spelling of 2002143501 in words is "two billion, two million, one hundred forty-three thousand, five hundred one".