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123092140 = 2256779091
BaseRepresentation
bin1110101011000…
…11110010101100
322120121201200011
413111203302230
5223002422030
620114143004
73023160133
oct725436254
9276551604
10123092140
1163533a46
1235281a64
131c66a4b2
14124c291a
15ac16b2a
hex7563cac

123092140 has 24 divisors (see below), whose sum is σ = 258903792. Its totient is φ = 49158720.

The previous prime is 123092131. The next prime is 123092141. The reversal of 123092140 is 41290321.

It is not an unprimeable number, because it can be changed into a prime (123092141) 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, 8995 + ... + 18085.

It is an arithmetic number, because the mean of its divisors is an integer number (10787658).

Almost surely, 2123092140 is an apocalyptic number.

123092140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123092140 is an abundant number, since it is smaller than the sum of its proper divisors (135811652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123092140 is a wasteful number, since it uses less digits than its factorization.

123092140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9777 (or 9775 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 123092140 is about 11094.6897207628. The cubic root of 123092140 is about 497.4431338250.

The spelling of 123092140 in words is "one hundred twenty-three million, ninety-two thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 677 1354 2708 3385 6770 9091 13540 18182 36364 45455 90910 181820 6154607 12309214 24618428 30773035 61546070 123092140