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130123412 = 2232530853
BaseRepresentation
bin1111100000110…
…00011010010100
3100001211221202122
413300120122110
5231302422122
620524555112
73140013356
oct760303224
9301757678
10130123412
11674a6711
12376b2a98
1320c5ca03
14133d30d6
15b655142
hex7c18694

130123412 has 6 divisors (see below), whose sum is σ = 227715978. Its totient is φ = 65061704.

The previous prime is 130123403. The next prime is 130123417. The reversal of 130123412 is 214321031.

It can be written as a sum of positive squares in only one way, i.e., 87534736 + 42588676 = 9356^2 + 6526^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130123417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16265423 + ... + 16265430.

It is an arithmetic number, because the mean of its divisors is an integer number (37952663).

Almost surely, 2130123412 is an apocalyptic number.

It is an amenable number.

130123412 is a deficient number, since it is larger than the sum of its proper divisors (97592566).

130123412 is a wasteful number, since it uses less digits than its factorization.

130123412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32530857 (or 32530855 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 130123412 is about 11407.1649413866. The cubic root of 130123412 is about 506.7399538109.

Adding to 130123412 its reverse (214321031), we get a palindrome (344444443).

The spelling of 130123412 in words is "one hundred thirty million, one hundred twenty-three thousand, four hundred twelve".

Divisors: 1 2 4 32530853 65061706 130123412