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122143103 = 145983717
BaseRepresentation
bin1110100011111…
…00000101111111
322111211111211122
413101330011333
5222232034403
620041541155
73012125225
oct721740577
9274744748
10122143103
1162a45a15
1234aa47bb
131c3c7534
1412316b15
15aaca838
hex747c17f

122143103 has 4 divisors (see below), whose sum is σ = 122228280. Its totient is φ = 122057928.

The previous prime is 122143097. The next prime is 122143127. The reversal of 122143103 is 301341221.

122143103 is nontrivially palindromic in base 3.

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

It is a cyclic number.

It is not a de Polignac number, because 122143103 - 210 = 122142079 is a prime.

It is a super-2 number, since 2×1221431032 = 29837875220937218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122143183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40400 + ... + 43317.

It is an arithmetic number, because the mean of its divisors is an integer number (30557070).

Almost surely, 2122143103 is an apocalyptic number.

122143103 is a deficient number, since it is larger than the sum of its proper divisors (85177).

122143103 is an equidigital number, since it uses as much as digits as its factorization.

122143103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85176.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 122143103 is about 11051.8370871091. The cubic root of 122143103 is about 496.1614098659.

Adding to 122143103 its reverse (301341221), we get a palindrome (423484324).

The spelling of 122143103 in words is "one hundred twenty-two million, one hundred forty-three thousand, one hundred three".

Divisors: 1 1459 83717 122143103