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8212141 = 71173163
BaseRepresentation
bin11111010100111010101101
3120110012221101
4133110322231
54100242031
6452003101
7126542050
oct37247255
916405841
108212141
1146a99a3
122900491
131916b72
14113aa97
15ac3361
hex7d4ead

8212141 has 4 divisors (see below), whose sum is σ = 9385312. Its totient is φ = 7038972.

The previous prime is 8212109. The next prime is 8212147. The reversal of 8212141 is 1412128.

It is a happy number.

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 8212141 - 25 = 8212109 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 (8212147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 586575 + ... + 586588.

It is an arithmetic number, because the mean of its divisors is an integer number (2346328).

Almost surely, 28212141 is an apocalyptic number.

It is an amenable number.

8212141 is a deficient number, since it is larger than the sum of its proper divisors (1173171).

8212141 is a wasteful number, since it uses less digits than its factorization.

8212141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173170.

The product of its digits is 128, while the sum is 19.

The square root of 8212141 is about 2865.6833391008. The cubic root of 8212141 is about 201.7524415609.

Adding to 8212141 its reverse (1412128), we get a palindrome (9624269).

The spelling of 8212141 in words is "eight million, two hundred twelve thousand, one hundred forty-one".

Divisors: 1 7 1173163 8212141