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130055421 = 3109397723
BaseRepresentation
bin1111100000001…
…11110011111101
3100001201111111110
413300013303331
5231243233141
620523312233
73136311216
oct760076375
9301644443
10130055421
116745a621
123767b679
1320c37a92
14133b640d
15b63ee16
hex7c07cfd

130055421 has 8 divisors (see below), whose sum is σ = 174998560. Its totient is φ = 85907952.

The previous prime is 130055383. The next prime is 130055441. The reversal of 130055421 is 124550031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 130055421 - 26 = 130055357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130055441) 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 7 ways as a sum of consecutive naturals, for example, 198535 + ... + 199188.

It is an arithmetic number, because the mean of its divisors is an integer number (21874820).

Almost surely, 2130055421 is an apocalyptic number.

It is an amenable number.

130055421 is a deficient number, since it is larger than the sum of its proper divisors (44943139).

130055421 is a wasteful number, since it uses less digits than its factorization.

130055421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397835.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 130055421 is about 11404.1843636448. The cubic root of 130055421 is about 506.6516792562.

The spelling of 130055421 in words is "one hundred thirty million, fifty-five thousand, four hundred twenty-one".

Divisors: 1 3 109 327 397723 1193169 43351807 130055421