421201345 has 16 divisors (see below), whose sum is σ = 512709120. Its totient is φ = 332135424.

The previous prime is 421201337. The next prime is 421201349. The reversal of 421201345 is 543102124.

It is a cyclic number.

It is not a de Polignac number, because 421201345 - 2³ = 421201337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421201349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238576 + ... + 240334.

It is an arithmetic number, because the mean of its divisors is an integer number (32044320).

Almost surely, 2^421201345 is an apocalyptic number.

It is an amenable number.

421201345 is a deficient number, since it is larger than the sum of its proper divisors (91507775).

421201345 is a wasteful number, since it uses less digits than its factorization.

421201345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2424.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 421201345 is about 20523.1904196204. The cubic root of 421201345 is about 749.6005843643.

Adding to 421201345 its reverse (543102124), we get a palindrome (964303469).

The spelling of 421201345 in words is "four hundred twenty-one million, two hundred one thousand, three hundred forty-five".