210423401 has 8 divisors (see below), whose sum is σ = 211509000. Its totient is φ = 209341440.

The previous prime is 210423397. The next prime is 210423413. The reversal of 210423401 is 104324012.

210423401 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 4 ways, for example, as 31933801 + 178489600 = 5651^2 + 13360^2 .

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 210423401 - 2² = 210423397 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 210423401.

It is not an unprimeable number, because it can be changed into a prime (210423491) 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, 296435 + ... + 297143.

It is an arithmetic number, because the mean of its divisors is an integer number (26438625).

Almost surely, 2^210423401 is an apocalyptic number.

It is an amenable number.

210423401 is a deficient number, since it is larger than the sum of its proper divisors (1085599).

210423401 is an equidigital number, since it uses as much as digits as its factorization.

210423401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819.

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

The square root of 210423401 is about 14505.9781124887. The cubic root of 210423401 is about 594.7913973445.

Adding to 210423401 its reverse (104324012), we get a palindrome (314747413).

The spelling of 210423401 in words is "two hundred ten million, four hundred twenty-three thousand, four hundred one".