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130300421 = 373521633
BaseRepresentation
bin1111100010000…
…11101000000101
3100002011221120112
413301003220011
5231324103141
620532442405
73141351416
oct761035005
9302157515
10130300421
11676076a9
1237779405
1320cc2454
141343b80d
15b68c7eb
hex7c43a05

130300421 has 4 divisors (see below), whose sum is σ = 133822092. Its totient is φ = 126778752.

The previous prime is 130300399. The next prime is 130300433. The reversal of 130300421 is 124003031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124003031 = 272945439.

It can be written as a sum of positive squares in 2 ways, for example, as 115562500 + 14737921 = 10750^2 + 3839^2 .

It is a cyclic number.

It is not a de Polignac number, because 130300421 - 222 = 126106117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130300396 and 130300405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130300481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1760780 + ... + 1760853.

It is an arithmetic number, because the mean of its divisors is an integer number (33455523).

Almost surely, 2130300421 is an apocalyptic number.

It is an amenable number.

130300421 is a deficient number, since it is larger than the sum of its proper divisors (3521671).

130300421 is an equidigital number, since it uses as much as digits as its factorization.

130300421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3521670.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 130300421 is about 11414.9209808916. The cubic root of 130300421 is about 506.9696252423.

Adding to 130300421 its reverse (124003031), we get a palindrome (254303452).

The spelling of 130300421 in words is "one hundred thirty million, three hundred thousand, four hundred twenty-one".

Divisors: 1 37 3521633 130300421