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102020424205 = 572914869263
BaseRepresentation
bin101111100000011100…
…1000010001000001101
3100202022222102112012211
41133000321002020031
53132414212033310
6114511215430421
710241106204040
oct1370071021015
9322288375184
10102020424205
113a2a2962777
1217932525411
13980b28831b
144d1b514c57
1529c17d3c8a
hex17c0e4220d

102020424205 has 8 divisors (see below), whose sum is σ = 139913724672. Its totient is φ = 69956862288.

The previous prime is 102020424203. The next prime is 102020424211. The reversal of 102020424205 is 502424020201.

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 102020424205 - 21 = 102020424203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102020424203) 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, 1457434597 + ... + 1457434666.

It is an arithmetic number, because the mean of its divisors is an integer number (17489215584).

Almost surely, 2102020424205 is an apocalyptic number.

It is an amenable number.

102020424205 is a deficient number, since it is larger than the sum of its proper divisors (37893300467).

102020424205 is an equidigital number, since it uses as much as digits as its factorization.

102020424205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2914869275.

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 102020424205 its reverse (502424020201), we get a palindrome (604444444406).

The spelling of 102020424205 in words is "one hundred two billion, twenty million, four hundred twenty-four thousand, two hundred five".

Divisors: 1 5 7 35 2914869263 14574346315 20404084841 102020424205