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130323842 = 21123376961
BaseRepresentation
bin1111100010010…
…01010110000010
3100002020010200222
413301021112002
5231330330332
620533143042
73141506615
oct761112602
9302203628
10130323842
1167623260
123778aa82
1320cccccc
141344617c
15b694712
hex7c49582

130323842 has 32 divisors (see below), whose sum is σ = 228576384. Its totient is φ = 55123200.

The previous prime is 130323839. The next prime is 130323847. The reversal of 130323842 is 248323031.

It is a Cunningham number, because it is equal to 5073-1.

It is not an unprimeable number, because it can be changed into a prime (130323847) 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, 15242 + ... + 22202.

It is an arithmetic number, because the mean of its divisors is an integer number (7143012).

Almost surely, 2130323842 is an apocalyptic number.

130323842 is a deficient number, since it is larger than the sum of its proper divisors (98252542).

130323842 is a wasteful number, since it uses less digits than its factorization.

130323842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7034.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 130323842 is about 11415.9468288881. The cubic root of 130323842 is about 506.9999987032. Note that the first 5 decimals are identical.

Adding to 130323842 its reverse (248323031), we get a palindrome (378646873).

The spelling of 130323842 in words is "one hundred thirty million, three hundred twenty-three thousand, eight hundred forty-two".

Divisors: 1 2 11 22 23 37 46 74 253 407 506 814 851 1702 6961 9361 13922 18722 76571 153142 160103 257557 320206 515114 1761133 2833127 3522266 5666254 5923811 11847622 65161921 130323842