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144052241 = 1213118757
BaseRepresentation
bin10001001011000…
…01000000010001
3101001001121112012
420211201000101
5243334132431
622143312305
73366265244
oct1045410021
9331047465
10144052241
117434a643
12402ab695
1323ac8918
14151bb25b
15c9a722b
hex8961011

144052241 has 4 divisors (see below), whose sum is σ = 144172212. Its totient is φ = 143932272.

The previous prime is 144052187. The next prime is 144052247. The reversal of 144052241 is 142250441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 142250441 = 178367673.

It can be written as a sum of positive squares in 2 ways, for example, as 7840000 + 136212241 = 2800^2 + 11671^2 .

It is a cyclic number.

It is not a de Polignac number, because 144052241 - 26 = 144052177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144052247) 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, 58166 + ... + 60591.

It is an arithmetic number, because the mean of its divisors is an integer number (36043053).

Almost surely, 2144052241 is an apocalyptic number.

It is an amenable number.

144052241 is a deficient number, since it is larger than the sum of its proper divisors (119971).

144052241 is a wasteful number, since it uses less digits than its factorization.

144052241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119970.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 144052241 is about 12002.1765109500. The cubic root of 144052241 is about 524.2116555076.

The spelling of 144052241 in words is "one hundred forty-four million, fifty-two thousand, two hundred forty-one".

Divisors: 1 1213 118757 144052241