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12402201 = 373119051
BaseRepresentation
bin101111010011…
…111000011001
3212100002121210
4233103320121
511133332301
61121453333
7210263010
oct57237031
925302553
1012402201
117000a59
1241a1249
1327530a6
14190ba77
15114ead6
hexbd3e19

12402201 has 16 divisors (see below), whose sum is σ = 19509248. Its totient is φ = 6858000.

The previous prime is 12402191. The next prime is 12402217. The reversal of 12402201 is 10220421.

12402201 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12402201 - 27 = 12402073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12402241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8875 + ... + 10176.

It is an arithmetic number, because the mean of its divisors is an integer number (1219328).

Almost surely, 212402201 is an apocalyptic number.

It is an amenable number.

12402201 is a deficient number, since it is larger than the sum of its proper divisors (7107047).

12402201 is a wasteful number, since it uses less digits than its factorization.

12402201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19092.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 12402201 is about 3521.6758794642. The cubic root of 12402201 is about 231.4725992943.

Adding to 12402201 its reverse (10220421), we get a palindrome (22622622).

The spelling of 12402201 in words is "twelve million, four hundred two thousand, two hundred one".

Divisors: 1 3 7 21 31 93 217 651 19051 57153 133357 400071 590581 1771743 4134067 12402201