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122106427 = 1731231701
BaseRepresentation
bin1110100011100…
…11001000111011
322111202122112021
413101303020323
5222224401202
620041055311
73011613262
oct721631073
9274678467
10122106427
1162a20403
1234a87537
131c3b3931
14123075d9
15aabea37
hex747323b

122106427 has 8 divisors (see below), whose sum is σ = 133460352. Its totient is φ = 111216000.

The previous prime is 122106421. The next prime is 122106431. The reversal of 122106427 is 724601221.

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 122106427 - 211 = 122104379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122106421) 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, 115324 + ... + 116377.

It is an arithmetic number, because the mean of its divisors is an integer number (16682544).

Almost surely, 2122106427 is an apocalyptic number.

122106427 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

122106427 is a deficient number, since it is larger than the sum of its proper divisors (11353925).

122106427 is a wasteful number, since it uses less digits than its factorization.

122106427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231749.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 122106427 is about 11050.1776908790. The cubic root of 122106427 is about 496.1117439765. Note that the first 3 decimals are identical.

Adding to 122106427 its reverse (724601221), we get a palindrome (846707648).

The spelling of 122106427 in words is "one hundred twenty-two million, one hundred six thousand, four hundred twenty-seven".

Divisors: 1 17 31 527 231701 3938917 7182731 122106427