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20442102401 = 75215605183
BaseRepresentation
bin10011000010011100…
…011011101010000001
31221202122102101201202
4103002130123222001
5313331134234101
613220241110545
71322401001120
oct230234335201
957678371652
1020442102401
118740041106
123b66028455
131c0a16a9a6
14dbccc9ab7
157e999936b
hex4c271ba81

20442102401 has 8 divisors (see below), whose sum is σ = 23407248384. Its totient is φ = 17488167840.

The previous prime is 20442102379. The next prime is 20442102409. The reversal of 20442102401 is 10420124402.

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 20442102401 - 210 = 20442101377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20442102409) 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, 2798945 + ... + 2806238.

It is an arithmetic number, because the mean of its divisors is an integer number (2925906048).

Almost surely, 220442102401 is an apocalyptic number.

It is an amenable number.

20442102401 is a deficient number, since it is larger than the sum of its proper divisors (2965145983).

20442102401 is an equidigital number, since it uses as much as digits as its factorization.

20442102401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5605711.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 20442102401 its reverse (10420124402), we get a palindrome (30862226803).

The spelling of 20442102401 in words is "twenty billion, four hundred forty-two million, one hundred two thousand, four hundred one".

Divisors: 1 7 521 3647 5605183 39236281 2920300343 20442102401