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122120323 = 139393871
BaseRepresentation
bin1110100011101…
…10100010000011
322111210100120221
413101312202003
5222230322243
620041243511
73012001633
oct721664203
9274710527
10122120323
1162a2a896
1234a93597
131c3ba060
141230c6c3
15aac3bed
hex7476883

122120323 has 4 divisors (see below), whose sum is σ = 131514208. Its totient is φ = 112726440.

The previous prime is 122120311. The next prime is 122120329. The reversal of 122120323 is 323021221.

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 122120323 - 225 = 88565891 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122120297 and 122120306.

It is not an unprimeable number, because it can be changed into a prime (122120329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4696923 + ... + 4696948.

It is an arithmetic number, because the mean of its divisors is an integer number (32878552).

Almost surely, 2122120323 is an apocalyptic number.

122120323 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

122120323 is a deficient number, since it is larger than the sum of its proper divisors (9393885).

122120323 is an equidigital number, since it uses as much as digits as its factorization.

122120323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9393884.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 122120323 is about 11050.8064411608. The cubic root of 122120323 is about 496.1305628257.

Adding to 122120323 its reverse (323021221), we get a palindrome (445141544).

The spelling of 122120323 in words is "one hundred twenty-two million, one hundred twenty thousand, three hundred twenty-three".

Divisors: 1 13 9393871 122120323