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123074023 = 451327271
BaseRepresentation
bin1110101010111…
…11010111100111
322120120210211011
413111133113213
5223001332043
620113523051
73023053252
oct725372747
9276523734
10123074023
1163521376
1235273487
131c662187
14124ba099
15ac1159d
hex755f5e7

123074023 has 4 divisors (see below), whose sum is σ = 123105808. Its totient is φ = 123042240.

The previous prime is 123074009. The next prime is 123074047. The reversal of 123074023 is 320470321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320470321 = 1916866859.

It is a cyclic number.

It is not a de Polignac number, because 123074023 - 25 = 123073991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123073985 and 123074003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123074053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9123 + ... + 18148.

It is an arithmetic number, because the mean of its divisors is an integer number (30776452).

Almost surely, 2123074023 is an apocalyptic number.

123074023 is a deficient number, since it is larger than the sum of its proper divisors (31785).

123074023 is an equidigital number, since it uses as much as digits as its factorization.

123074023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31784.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 123074023 is about 11093.8732190340. The cubic root of 123074023 is about 497.4187276648.

The spelling of 123074023 in words is "one hundred twenty-three million, seventy-four thousand, twenty-three".

Divisors: 1 4513 27271 123074023