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123053430 = 2355936917
BaseRepresentation
bin1110101010110…
…10010101110110
322120112202120110
413111122111312
5223000202210
620113243450
73022636233
oct725322566
9276482513
10123053430
1163507955
1235263586
131c6559a6
14124b278a
15ac0a420
hex755a576

123053430 has 32 divisors (see below), whose sum is σ = 295869024. Its totient is φ = 32754176.

The previous prime is 123053387. The next prime is 123053459. The reversal of 123053430 is 34350321.

It is a junction number, because it is equal to n+sod(n) for n = 123053397 and 123053406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14332 + ... + 21248.

It is an arithmetic number, because the mean of its divisors is an integer number (9245907).

Almost surely, 2123053430 is an apocalyptic number.

123053430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123053430 is an abundant number, since it is smaller than the sum of its proper divisors (172815594).

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

123053430 is a wasteful number, since it uses less digits than its factorization.

123053430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7520.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 123053430 is about 11092.9450553043. The cubic root of 123053430 is about 497.3909830740.

The spelling of 123053430 in words is "one hundred twenty-three million, fifty-three thousand, four hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 593 1186 1779 2965 3558 5930 6917 8895 13834 17790 20751 34585 41502 69170 103755 207510 4101781 8203562 12305343 20508905 24610686 41017810 61526715 123053430