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123942383 = 4319115091
BaseRepresentation
bin1110110001100…
…11010111101111
322122012220222122
413120303113233
5223212124013
620144303155
73033331025
oct730632757
9278186878
10123942383
1163a64824
1235611abb
131c8a74b6
1412664715
15ad33a08
hex76335ef

123942383 has 8 divisors (see below), whose sum is σ = 127497216. Its totient is φ = 120418200.

The previous prime is 123942349. The next prime is 123942391. The reversal of 123942383 is 383249321.

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 123942383 - 26 = 123942319 is a prime.

It is a super-3 number, since 3×1239423833 (a number of 25 digits) contains 333 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 (123942683) 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, 668 + ... + 15758.

It is an arithmetic number, because the mean of its divisors is an integer number (15937152).

Almost surely, 2123942383 is an apocalyptic number.

123942383 is a deficient number, since it is larger than the sum of its proper divisors (3554833).

123942383 is a wasteful number, since it uses less digits than its factorization.

123942383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15325.

The product of its digits is 31104, while the sum is 35.

The square root of 123942383 is about 11132.9413453948. The cubic root of 123942383 is about 498.5858481197.

The spelling of 123942383 in words is "one hundred twenty-three million, nine hundred forty-two thousand, three hundred eighty-three".

Divisors: 1 43 191 8213 15091 648913 2882381 123942383