210342401 has 8 divisors (see below), whose sum is σ = 211882920. Its totient is φ = 208806912.

The previous prime is 210342371. The next prime is 210342439. The reversal of 210342401 is 104243012.

It can be written as a sum of positive squares in 4 ways, for example, as 3701776 + 206640625 = 1924^2 + 14375^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 210342401 - 2¹⁸ = 210080257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210342401.

It is not an unprimeable number, because it can be changed into a prime (210342491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125195 + ... + 126863.

It is an arithmetic number, because the mean of its divisors is an integer number (26485365).

Almost surely, 2^210342401 is an apocalyptic number.

It is an amenable number.

210342401 is a deficient number, since it is larger than the sum of its proper divisors (1540519).

210342401 is a wasteful number, since it uses less digits than its factorization.

210342401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2515.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 210342401 is about 14503.1858913826. The cubic root of 210342401 is about 594.7150682446.

Adding to 210342401 its reverse (104243012), we get a palindrome (314585413).

The spelling of 210342401 in words is "two hundred ten million, three hundred forty-two thousand, four hundred one".