210420401 has 8 divisors (see below), whose sum is σ = 213922560. Its totient is φ = 206929008.

The previous prime is 210420377. The next prime is 210420403. The reversal of 210420401 is 104024012.

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 210420401 - 2⁶ = 210420337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (210420403) 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, 43040 + ... + 47678.

It is an arithmetic number, because the mean of its divisors is an integer number (26740320).

Almost surely, 2^210420401 is an apocalyptic number.

It is an amenable number.

210420401 is a deficient number, since it is larger than the sum of its proper divisors (3502159).

210420401 is an equidigital number, since it uses as much as digits as its factorization.

210420401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5383.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 210420401 is about 14505.8747064767. The cubic root of 210420401 is about 594.7885706902.

Adding to 210420401 its reverse (104024012), we get a palindrome (314444413).

The spelling of 210420401 in words is "two hundred ten million, four hundred twenty thousand, four hundred one".