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120131443 = 532266631
BaseRepresentation
bin1110010100100…
…00111101110011
322101001022100201
413022100331303
5221223201233
615530500031
72656046305
oct712207563
9271038321
10120131443
11618a1593
1234294617
131bb719c3
1411d51975
15a82e77d
hex7290f73

120131443 has 4 divisors (see below), whose sum is σ = 122398128. Its totient is φ = 117864760.

The previous prime is 120131441. The next prime is 120131467. The reversal of 120131443 is 344131021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120131443 - 21 = 120131441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120131443.

It is not an unprimeable number, because it can be changed into a prime (120131441) 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, 1133263 + ... + 1133368.

It is an arithmetic number, because the mean of its divisors is an integer number (30599532).

Almost surely, 2120131443 is an apocalyptic number.

120131443 is a deficient number, since it is larger than the sum of its proper divisors (2266685).

120131443 is an equidigital number, since it uses as much as digits as its factorization.

120131443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2266684.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 120131443 is about 10960.4490327723. The cubic root of 120131443 is about 493.4224415473.

Adding to 120131443 its reverse (344131021), we get a palindrome (464262464).

It can be divided in two parts, 12013 and 1443, that added together give a square (13456 = 1162).

The spelling of 120131443 in words is "one hundred twenty million, one hundred thirty-one thousand, four hundred forty-three".

Divisors: 1 53 2266631 120131443