243140001 has 16 divisors (see below), whose sum is σ = 369661824. Its totient is φ = 140822784.

The previous prime is 243139999. The next prime is 243140011. The reversal of 243140001 is 100041342.

243140001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243140001 - 2¹ = 243139999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243140011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182701 + ... + 184026.

It is an arithmetic number, because the mean of its divisors is an integer number (23103864).

Almost surely, 2^243140001 is an apocalyptic number.

It is an amenable number.

243140001 is a deficient number, since it is larger than the sum of its proper divisors (126521823).

243140001 is a wasteful number, since it uses less digits than its factorization.

243140001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366760.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 243140001 is about 15592.9471556855. The cubic root of 243140001 is about 624.1449649843.

Adding to 243140001 its reverse (100041342), we get a palindrome (343181343).

The spelling of 243140001 in words is "two hundred forty-three million, one hundred forty thousand, one".