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147241 = 732017
BaseRepresentation
bin100011111100101001
321110222101
4203330221
514202431
63053401
71152163
oct437451
9243871
10147241
11a0696
1271261
1352033
143b933
152d961
hex23f29

147241 has 4 divisors (see below), whose sum is σ = 149332. Its totient is φ = 145152.

The previous prime is 147229. The next prime is 147253. The reversal of 147241 is 142741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 142741 = 349409.

It is an interprime number because it is at equal distance from previous prime (147229) and next prime (147253).

It can be written as a sum of positive squares in 2 ways, for example, as 105625 + 41616 = 325^2 + 204^2 .

It is a cyclic number.

It is not a de Polignac number, because 147241 - 25 = 147209 is a prime.

It is a Duffinian number.

147241 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147211) 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, 936 + ... + 1081.

It is an arithmetic number, because the mean of its divisors is an integer number (37333).

2147241 is an apocalyptic number.

It is an amenable number.

147241 is a deficient number, since it is larger than the sum of its proper divisors (2091).

147241 is an equidigital number, since it uses as much as digits as its factorization.

147241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2090.

The product of its digits is 224, while the sum is 19.

The square root of 147241 is about 383.7199499635. The cubic root of 147241 is about 52.8051466134.

Adding to 147241 its reverse (142741), we get a palindrome (289982).

The spelling of 147241 in words is "one hundred forty-seven thousand, two hundred forty-one", and thus it is an iban number.

Divisors: 1 73 2017 147241