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421421313 = 31779104597
BaseRepresentation
bin11001000111100…
…110000100000001
31002100222102100210
4121013212010001
51330340440223
6105452304333
713305010365
oct3107460401
91070872323
10421421313
111a6977085
12b91720a9
1369401931
143dd7d2a5
1526ee5893
hex191e6101

421421313 has 16 divisors (see below), whose sum is σ = 602484480. Its totient is φ = 261071616.

The previous prime is 421421309. The next prime is 421421333. The reversal of 421421313 is 313124124.

It is not a de Polignac number, because 421421313 - 22 = 421421309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421421313.

It is not an unprimeable number, because it can be changed into a prime (421421333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48270 + ... + 56327.

It is an arithmetic number, because the mean of its divisors is an integer number (37655280).

Almost surely, 2421421313 is an apocalyptic number.

It is an amenable number.

421421313 is a deficient number, since it is larger than the sum of its proper divisors (181063167).

421421313 is a wasteful number, since it uses less digits than its factorization.

421421313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104696.

The product of its digits is 576, while the sum is 21.

The square root of 421421313 is about 20528.5487309746. The cubic root of 421421313 is about 749.7310520119.

Adding to 421421313 its reverse (313124124), we get a palindrome (734545437).

The spelling of 421421313 in words is "four hundred twenty-one million, four hundred twenty-one thousand, three hundred thirteen".

Divisors: 1 3 17 51 79 237 1343 4029 104597 313791 1778149 5334447 8263163 24789489 140473771 421421313