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123142463 = 1391515867
BaseRepresentation
bin1110101011100…
…00000100111111
322120201021200222
413111300010333
5223011024323
620115211555
73023456633
oct725600477
9276637628
10123142463
1163568834
12352a6bbb
131c687382
14124d6dc3
15ac269c8
hex757013f

123142463 has 8 divisors (see below), whose sum is σ = 124871040. Its totient is φ = 121426200.

The previous prime is 123142433. The next prime is 123142501. The reversal of 123142463 is 364241321.

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 123142463 - 26 = 123142399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123142433) 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, 18056 + ... + 23922.

It is an arithmetic number, because the mean of its divisors is an integer number (15608880).

Almost surely, 2123142463 is an apocalyptic number.

123142463 is a deficient number, since it is larger than the sum of its proper divisors (1728577).

123142463 is a wasteful number, since it uses less digits than its factorization.

123142463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6157.

The product of its digits is 3456, while the sum is 26.

The square root of 123142463 is about 11096.9573757855. The cubic root of 123142463 is about 497.5109134581.

Adding to 123142463 its reverse (364241321), we get a palindrome (487383784).

The spelling of 123142463 in words is "one hundred twenty-three million, one hundred forty-two thousand, four hundred sixty-three".

Divisors: 1 139 151 5867 20989 815513 885917 123142463