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120131243 = 199076971
BaseRepresentation
bin1110010100100…
…00111010101011
322101001022002022
413022100322223
5221223144433
615530455055
72656045601
oct712207253
9271038068
10120131243
11618a1421
123429448b
131bb7189b
1411d51871
15a82e698
hex7290eab

120131243 has 8 divisors (see below), whose sum is σ = 126611520. Its totient is φ = 113666760.

The previous prime is 120131233. The next prime is 120131261. The reversal of 120131243 is 342131021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120131243 - 24 = 120131227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120131213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13748 + ... + 20718.

It is an arithmetic number, because the mean of its divisors is an integer number (15826440).

Almost surely, 2120131243 is an apocalyptic number.

120131243 is a deficient number, since it is larger than the sum of its proper divisors (6480277).

120131243 is an equidigital number, since it uses as much as digits as its factorization.

120131243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7897.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 120131243 is about 10960.4399090547. The cubic root of 120131243 is about 493.4221677235.

Adding to 120131243 its reverse (342131021), we get a palindrome (462262264).

The spelling of 120131243 in words is "one hundred twenty million, one hundred thirty-one thousand, two hundred forty-three".

Divisors: 1 19 907 6971 17233 132449 6322697 120131243