210402001 has 2 divisors, whose sum is σ = 210402002. Its totient is φ = 210402000.

The previous prime is 210401969. The next prime is 210402007. The reversal of 210402001 is 100204012.

210402001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193877776 + 16524225 = 13924^2 + 4065^2 .

It is a cyclic number.

It is not a de Polignac number, because 210402001 - 2⁵ = 210401969 is a prime.

It is not a weakly prime, because it can be changed into another prime (210402007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105201000 + 105201001.

It is an arithmetic number, because the mean of its divisors is an integer number (105201001).

Almost surely, 2^210402001 is an apocalyptic number.

It is an amenable number.

210402001 is a deficient number, since it is larger than the sum of its proper divisors (1).

210402001 is an equidigital number, since it uses as much as digits as its factorization.

210402001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 210402001 is about 14505.2404668106. The cubic root of 210402001 is about 594.7712332890.

Adding to 210402001 its reverse (100204012), we get a palindrome (310606013).

The spelling of 210402001 in words is "two hundred ten million, four hundred two thousand, one".