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102420342001 = 156496544849
BaseRepresentation
bin101111101100010111…
…0100110010011110001
3100210100211221110022001
41133120232212103301
53134224101421001
6115015023214001
710254033354115
oct1373056462361
9323324843261
10102420342001
113a48868194a
1217a24447301
13987309b383
144d58697745
1529e697d001
hex17d8ba64f1

102420342001 has 4 divisors (see below), whose sum is σ = 102426902500. Its totient is φ = 102413781504.

The previous prime is 102420341977. The next prime is 102420342047. The reversal of 102420342001 is 100243024201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50884531776 + 51535810225 = 225576^2 + 227015^2 .

It is a cyclic number.

It is not a de Polignac number, because 102420342001 - 213 = 102420333809 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 102420342001.

It is not an unprimeable number, because it can be changed into a prime (102420342701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3256776 + ... + 3288073.

It is an arithmetic number, because the mean of its divisors is an integer number (25606725625).

Almost surely, 2102420342001 is an apocalyptic number.

It is an amenable number.

102420342001 is a deficient number, since it is larger than the sum of its proper divisors (6560499).

102420342001 is an equidigital number, since it uses as much as digits as its factorization.

102420342001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6560498.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 102420342001 its reverse (100243024201), we get a palindrome (202663366202).

The spelling of 102420342001 in words is "one hundred two billion, four hundred twenty million, three hundred forty-two thousand, one".

Divisors: 1 15649 6544849 102420342001