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8142141 = 37387721
BaseRepresentation
bin11111000011110100111101
3120022122220210
4133003310331
54041022031
6450303033
7126131010
oct37036475
916278823
108142141
114661347
122887a79
1318c1047
14111d377
15aac746
hex7c3d3d

8142141 has 8 divisors (see below), whose sum is σ = 12407104. Its totient is φ = 4652640.

The previous prime is 8142137. The next prime is 8142151. The reversal of 8142141 is 1412418.

It is a happy number.

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

It is not a de Polignac number, because 8142141 - 22 = 8142137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 387721 = 8142141 / (8 + 1 + 4 + 2 + 1 + 4 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8142131) 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, 193840 + ... + 193881.

It is an arithmetic number, because the mean of its divisors is an integer number (1550888).

Almost surely, 28142141 is an apocalyptic number.

It is an amenable number.

8142141 is a deficient number, since it is larger than the sum of its proper divisors (4264963).

8142141 is a wasteful number, since it uses less digits than its factorization.

8142141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387731.

The product of its digits is 256, while the sum is 21.

The square root of 8142141 is about 2853.4437089244. The cubic root of 8142141 is about 201.1775614710.

Adding to 8142141 its reverse (1412418), we get a palindrome (9554559).

The spelling of 8142141 in words is "eight million, one hundred forty-two thousand, one hundred forty-one".

Divisors: 1 3 7 21 387721 1163163 2714047 8142141