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120283021 = 1011319091
BaseRepresentation
bin1110010101101…
…01111110001101
322101100000021201
413022311332031
5221243024041
615534025501
72660250235
oct712657615
9271300251
10120283021
1161995461
1234348291
131bbc59b1
1411d90cc5
15a85e631
hex72b5f8d

120283021 has 8 divisors (see below), whose sum is σ = 122414688. Its totient is φ = 118170000.

The previous prime is 120283013. The next prime is 120283027. The reversal of 120283021 is 120382021.

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

It is not a de Polignac number, because 120283021 - 23 = 120283013 is a prime.

It is a deceptive number, since it divides R120283020.

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 120283021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120283027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8686 + ... + 17776.

It is an arithmetic number, because the mean of its divisors is an integer number (15301836).

Almost surely, 2120283021 is an apocalyptic number.

It is an amenable number.

120283021 is a deficient number, since it is larger than the sum of its proper divisors (2131667).

120283021 is a wasteful number, since it uses less digits than its factorization.

120283021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9323.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 120283021 is about 10967.3616243835. The cubic root of 120283021 is about 493.6298825256.

The spelling of 120283021 in words is "one hundred twenty million, two hundred eighty-three thousand, twenty-one".

Divisors: 1 101 131 9091 13231 918191 1190921 120283021