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122010505 = 553460417
BaseRepresentation
bin1110100010110…
…11101110001001
322111120202221121
413101123232021
5222213314010
620035035241
73011033521
oct721335611
9274522847
10122010505
1162965331
1234a3bb21
131c37c086
14122c0681
15aaa13da
hex745bb89

122010505 has 8 divisors (see below), whose sum is σ = 149175432. Its totient is φ = 95766528.

The previous prime is 122010503. The next prime is 122010527. The reversal of 122010505 is 505010221.

It can be written as a sum of positive squares in 4 ways, for example, as 5089536 + 116920969 = 2256^2 + 10813^2 .

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 122010505 - 21 = 122010503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122010503) 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, 229944 + ... + 230473.

It is an arithmetic number, because the mean of its divisors is an integer number (18646929).

Almost surely, 2122010505 is an apocalyptic number.

It is an amenable number.

122010505 is a deficient number, since it is larger than the sum of its proper divisors (27164927).

122010505 is an equidigital number, since it uses as much as digits as its factorization.

122010505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460475.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 122010505 is about 11045.8365459570. The cubic root of 122010505 is about 495.9818013289.

Adding to 122010505 its reverse (505010221), we get a palindrome (627020726).

The spelling of 122010505 in words is "one hundred twenty-two million, ten thousand, five hundred five".

Divisors: 1 5 53 265 460417 2302085 24402101 122010505