210040001 has 2 divisors, whose sum is σ = 210040002. Its totient is φ = 210040000.

The previous prime is 210039997. The next prime is 210040013. The reversal of 210040001 is 100040012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113529025 + 96510976 = 10655^2 + 9824^2 .

It is a cyclic number.

It is not a de Polignac number, because 210040001 - 2² = 210039997 is a prime.

It is not a weakly prime, because it can be changed into another prime (210045001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105020000 + 105020001.

It is an arithmetic number, because the mean of its divisors is an integer number (105020001).

Almost surely, 2^210040001 is an apocalyptic number.

It is an amenable number.

210040001 is a deficient number, since it is larger than the sum of its proper divisors (1).

210040001 is an equidigital number, since it uses as much as digits as its factorization.

210040001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 210040001 is about 14492.7568460938. The cubic root of 210040001 is about 594.4299330108.

Adding to 210040001 its reverse (100040012), we get a palindrome (310080013).

The spelling of 210040001 in words is "two hundred ten million, forty thousand, one".