210140001 has 10 divisors (see below), whose sum is σ = 313912962. Its totient is φ = 140093280.

The previous prime is 210139997. The next prime is 210140017. The reversal of 210140001 is 100041012.

It is a happy number.

210140001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 198133776 + 12006225 = 14076^2 + 3465^2 .

It is not a de Polignac number, because 210140001 - 2² = 210139997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (210140101) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1297080 + ... + 1297241.

Almost surely, 2^210140001 is an apocalyptic number.

It is an amenable number.

210140001 is a deficient number, since it is larger than the sum of its proper divisors (103772961).

210140001 is an equidigital number, since it uses as much as digits as its factorization.

210140001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594333 (or 2594324 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 210140001 is about 14496.2064347884. The cubic root of 210140001 is about 594.5242540320.

Adding to 210140001 its reverse (100041012), we get a palindrome (310181013).

The spelling of 210140001 in words is "two hundred ten million, one hundred forty thousand, one".