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42300030 = 23510211381
BaseRepresentation
bin1010000101011…
…1001001111110
32221121001201210
42201113021332
541312100110
64110345250
71022354463
oct241271176
987531653
1042300030
1121971703
12121bb226
1389c0706
14589166a
153aa8520
hex285727e

42300030 has 32 divisors (see below), whose sum is σ = 101693088. Its totient is φ = 11260800.

The previous prime is 42300019. The next prime is 42300091. The reversal of 42300030 is 3000324.

It is a junction number, because it is equal to n+sod(n) for n = 42299979 and 42300015.

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, 29940 + ... + 31320.

It is an arithmetic number, because the mean of its divisors is an integer number (3177909).

Almost surely, 242300030 is an apocalyptic number.

42300030 is an abundant number, since it is smaller than the sum of its proper divisors (59393058).

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

42300030 is a wasteful number, since it uses less digits than its factorization.

42300030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2412.

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 42300030 is about 6503.8473229313. The cubic root of 42300030 is about 348.4284094969.

Adding to 42300030 its reverse (3000324), we get a palindrome (45300354).

The spelling of 42300030 in words is "forty-two million, three hundred thousand, thirty".

Divisors: 1 2 3 5 6 10 15 30 1021 1381 2042 2762 3063 4143 5105 6126 6905 8286 10210 13810 15315 20715 30630 41430 1410001 2820002 4230003 7050005 8460006 14100010 21150015 42300030