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423130043 = 72109227349
BaseRepresentation
bin11001001110000…
…111001110111011
31002111012020022002
4121032013032323
51331310130133
6105553051215
713325355200
oct3116071673
91074166262
10423130043
111a7933956
12b9856b0b
136987c60b
14402a5ca7
1527231ce8
hex193873bb

423130043 has 24 divisors (see below), whose sum is σ = 500346000. Its totient is φ = 356747328.

The previous prime is 423130033. The next prime is 423130069. The reversal of 423130043 is 340031324.

It is not a de Polignac number, because 423130043 - 26 = 423129979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 423129997 and 423130024.

It is not an unprimeable number, because it can be changed into a prime (423130013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1212233 + ... + 1212581.

It is an arithmetic number, because the mean of its divisors is an integer number (20847750).

Almost surely, 2423130043 is an apocalyptic number.

423130043 is a deficient number, since it is larger than the sum of its proper divisors (77215957).

423130043 is a wasteful number, since it uses less digits than its factorization.

423130043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699 (or 692 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 423130043 is about 20570.1250117737. The cubic root of 423130043 is about 750.7429928909.

Adding to 423130043 its reverse (340031324), we get a palindrome (763161367).

The spelling of 423130043 in words is "four hundred twenty-three million, one hundred thirty thousand, forty-three".

Divisors: 1 7 49 109 227 349 763 1589 2443 5341 11123 17101 24743 38041 79223 173201 266287 554561 1212407 1864009 3881927 8635307 60447149 423130043