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120242449 = 129193139
BaseRepresentation
bin1110010101011…
…00000100010001
322101020221122001
413022230010101
5221240224244
615533114001
72660021035
oct712540421
9271227561
10120242449
1161967a28
1234328901
131bbb03a2
1411d801c5
15a8525d4
hex72ac111

120242449 has 4 divisors (see below), whose sum is σ = 120336880. Its totient is φ = 120148020.

The previous prime is 120242443. The next prime is 120242477. The reversal of 120242449 is 944242021.

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 120242449 - 25 = 120242417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120242443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45279 + ... + 47860.

It is an arithmetic number, because the mean of its divisors is an integer number (30084220).

Almost surely, 2120242449 is an apocalyptic number.

It is an amenable number.

120242449 is a deficient number, since it is larger than the sum of its proper divisors (94431).

120242449 is an equidigital number, since it uses as much as digits as its factorization.

120242449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94430.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 120242449 is about 10965.5117983613. The cubic root of 120242449 is about 493.5743750964.

The spelling of 120242449 in words is "one hundred twenty million, two hundred forty-two thousand, four hundred forty-nine".

Divisors: 1 1291 93139 120242449