Search a number
-
+
130742693 = 227575959
BaseRepresentation
bin1111100101011…
…11100110100101
3100010000102020222
413302233212211
5231432231233
620550134125
73145203014
oct762574645
9303012228
10130742693
1167889a14
1237951345
1321118853
1413514a7b
15b728898
hex7caf9a5

130742693 has 4 divisors (see below), whose sum is σ = 131318880. Its totient is φ = 130166508.

The previous prime is 130742687. The next prime is 130742713. The reversal of 130742693 is 396247031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 396247031 = 1709231859.

It is a cyclic number.

It is not a de Polignac number, because 130742693 - 218 = 130480549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130742653) 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 3 ways as a sum of consecutive naturals, for example, 287753 + ... + 288206.

It is an arithmetic number, because the mean of its divisors is an integer number (32829720).

Almost surely, 2130742693 is an apocalyptic number.

It is an amenable number.

130742693 is a deficient number, since it is larger than the sum of its proper divisors (576187).

130742693 is an equidigital number, since it uses as much as digits as its factorization.

130742693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576186.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 130742693 is about 11434.2771087638. The cubic root of 130742693 is about 507.5425711092.

The spelling of 130742693 in words is "one hundred thirty million, seven hundred forty-two thousand, six hundred ninety-three".

Divisors: 1 227 575959 130742693