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132240143 = 718891449
BaseRepresentation
bin1111110000111…
…01001100001111
3100012211111101002
413320131030033
5232323141033
621042210515
73164010530
oct770351417
9305744332
10132240143
1168711a82
1238353a3b
1321521309
14137c4687
15b9223e8
hex7e1d30f

132240143 has 4 divisors (see below), whose sum is σ = 151131600. Its totient is φ = 113348688.

The previous prime is 132240139. The next prime is 132240149. The reversal of 132240143 is 341042231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341042231 = 3171075843.

It is a cyclic number.

It is not a de Polignac number, because 132240143 - 22 = 132240139 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 (132240149) 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, 9445718 + ... + 9445731.

It is an arithmetic number, because the mean of its divisors is an integer number (37782900).

Almost surely, 2132240143 is an apocalyptic number.

132240143 is a deficient number, since it is larger than the sum of its proper divisors (18891457).

132240143 is an equidigital number, since it uses as much as digits as its factorization.

132240143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18891456.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 132240143 is about 11499.5714267967. The cubic root of 132240143 is about 509.4729182227.

Adding to 132240143 its reverse (341042231), we get a palindrome (473282374).

The spelling of 132240143 in words is "one hundred thirty-two million, two hundred forty thousand, one hundred forty-three".

Divisors: 1 7 18891449 132240143