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123104993 = 1123491991
BaseRepresentation
bin1110101011001…
…10111011100001
322120122101022012
413111212323201
5223003324433
620114322305
73023242454
oct725467341
9276571265
10123104993
1163542670
1235289395
131c6732bb
14124c749b
15ac1a848
hex7566ee1

123104993 has 16 divisors (see below), whose sum is σ = 140562432. Its totient is φ = 106722000.

The previous prime is 123104987. The next prime is 123105013. The reversal of 123104993 is 399401321.

It is not a de Polignac number, because 123104993 - 24 = 123104977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123104903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123728 + ... + 124718.

It is an arithmetic number, because the mean of its divisors is an integer number (8785152).

Almost surely, 2123104993 is an apocalyptic number.

It is an amenable number.

123104993 is a deficient number, since it is larger than the sum of its proper divisors (17457439).

123104993 is a wasteful number, since it uses less digits than its factorization.

123104993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 123104993 is about 11095.2689467178. The cubic root of 123104993 is about 497.4604471808.

The spelling of 123104993 in words is "one hundred twenty-three million, one hundred four thousand, nine hundred ninety-three".

Divisors: 1 11 23 253 491 991 5401 10901 11293 22793 124223 250723 486581 5352391 11191363 123104993