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130142893 = 619210247
BaseRepresentation
bin1111100000111…
…01001010101101
3100001212221111011
413300131022231
5231304033033
620525225221
73140124226
oct760351255
9301787434
10130142893
116750a311
1237702211
1320c6883a
14133da24d
15b65accd
hex7c1d2ad

130142893 has 4 divisors (see below), whose sum is σ = 130353760. Its totient is φ = 129932028.

The previous prime is 130142879. The next prime is 130142917. The reversal of 130142893 is 398241031.

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.

It is a cyclic number.

It is not a de Polignac number, because 130142893 - 25 = 130142861 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 (130142813) 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, 104505 + ... + 105742.

It is an arithmetic number, because the mean of its divisors is an integer number (32588440).

Almost surely, 2130142893 is an apocalyptic number.

It is an amenable number.

130142893 is a deficient number, since it is larger than the sum of its proper divisors (210867).

130142893 is an equidigital number, since it uses as much as digits as its factorization.

130142893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210866.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 130142893 is about 11408.0188025792. The cubic root of 130142893 is about 506.7652408527.

The spelling of 130142893 in words is "one hundred thirty million, one hundred forty-two thousand, eight hundred ninety-three".

Divisors: 1 619 210247 130142893