421145313 has 8 divisors (see below), whose sum is σ = 562351968. Its totient is φ = 280351104.

The previous prime is 421145303. The next prime is 421145321. The reversal of 421145313 is 313541124.

It is a happy number.

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

It is not a de Polignac number, because 421145313 - 2⁴ = 421145297 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (421145303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100720 + ... + 104817.

It is an arithmetic number, because the mean of its divisors is an integer number (70293996).

Almost surely, 2^421145313 is an apocalyptic number.

It is an amenable number.

421145313 is a deficient number, since it is larger than the sum of its proper divisors (141206655).

421145313 is a wasteful number, since it uses less digits than its factorization.

421145313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206223.

The product of its digits is 1440, while the sum is 24.

The square root of 421145313 is about 20521.8252843162. The cubic root of 421145313 is about 749.5673433478.

Adding to 421145313 its reverse (313541124), we get a palindrome (734686437).

The spelling of 421145313 in words is "four hundred twenty-one million, one hundred forty-five thousand, three hundred thirteen".