421302401 has 8 divisors (see below), whose sum is σ = 469355880. Its totient is φ = 375484032.

The previous prime is 421302397. The next prime is 421302473. The reversal of 421302401 is 104203124.

It can be written as a sum of positive squares in 4 ways, for example, as 13868176 + 407434225 = 3724^2 + 20185^2 .

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 421302401 - 2² = 421302397 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 421302401.

It is not an unprimeable number, because it can be changed into a prime (421302481) 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, 558380 + ... + 559133.

It is an arithmetic number, because the mean of its divisors is an integer number (58669485).

Almost surely, 2^421302401 is an apocalyptic number.

It is an amenable number.

421302401 is a deficient number, since it is larger than the sum of its proper divisors (48053479).

421302401 is a wasteful number, since it uses less digits than its factorization.

421302401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117555.

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

The square root of 421302401 is about 20525.6522673459. The cubic root of 421302401 is about 749.6605284427.

Adding to 421302401 its reverse (104203124), we get a palindrome (525505525).

The spelling of 421302401 in words is "four hundred twenty-one million, three hundred two thousand, four hundred one".