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120521071 = 1129377809
BaseRepresentation
bin1110010111100…
…00000101101111
322101210002211101
413023300011233
5221323133241
615543103531
72662261246
oct713600557
9271702741
10120521071
11620382a0
1234441ba7
131bc7a158
141201395d
15a8a9e31
hex72f016f

120521071 has 8 divisors (see below), whose sum is σ = 136011600. Its totient is φ = 105786240.

The previous prime is 120521069. The next prime is 120521077. The reversal of 120521071 is 170125021.

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 120521071 - 21 = 120521069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120521077) 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, 188586 + ... + 189223.

It is an arithmetic number, because the mean of its divisors is an integer number (17001450).

Almost surely, 2120521071 is an apocalyptic number.

120521071 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120521071 is a deficient number, since it is larger than the sum of its proper divisors (15490529).

120521071 is a wasteful number, since it uses less digits than its factorization.

120521071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377849.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 120521071 is about 10978.2089158478. The cubic root of 120521071 is about 493.9553126596.

Adding to 120521071 its reverse (170125021), we get a palindrome (290646092).

The spelling of 120521071 in words is "one hundred twenty million, five hundred twenty-one thousand, seventy-one".

Divisors: 1 11 29 319 377809 4155899 10956461 120521071