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120422521 = 251479771
BaseRepresentation
bin1110010110110…
…00000001111001
322101121002122101
413023120001321
5221312010041
615541023401
72661401032
oct713300171
9271532571
10120422521
1161a8024a
12343b4b61
131bc4433b
1411dc9a89
15a88ab31
hex72d8079

120422521 has 4 divisors (see below), whose sum is σ = 120902544. Its totient is φ = 119942500.

The previous prime is 120422501. The next prime is 120422537. The reversal of 120422521 is 125224021.

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 120422521 - 223 = 112033913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120422501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239635 + ... + 240136.

It is an arithmetic number, because the mean of its divisors is an integer number (30225636).

Almost surely, 2120422521 is an apocalyptic number.

It is an amenable number.

120422521 is a deficient number, since it is larger than the sum of its proper divisors (480023).

120422521 is an equidigital number, since it uses as much as digits as its factorization.

120422521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480022.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 120422521 is about 10973.7195608417. The cubic root of 120422521 is about 493.8206403017.

Adding to 120422521 its reverse (125224021), we get a palindrome (245646542).

The spelling of 120422521 in words is "one hundred twenty million, four hundred twenty-two thousand, five hundred twenty-one".

Divisors: 1 251 479771 120422521