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144120212 = 2236030053
BaseRepresentation
bin10001001011100…
…01100110010100
3101001012001202122
420211301212110
5243343321322
622144555112
73400000355
oct1045614624
9331161678
10144120212
1174396715
1240322a98
1323b20842
14151d7d2c
15c9bc442
hex8971994

144120212 has 6 divisors (see below), whose sum is σ = 252210378. Its totient is φ = 72060104.

The previous prime is 144120211. The next prime is 144120259. The reversal of 144120212 is 212021441.

It can be written as a sum of positive squares in only one way, i.e., 93624976 + 50495236 = 9676^2 + 7106^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144120211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18015023 + ... + 18015030.

It is an arithmetic number, because the mean of its divisors is an integer number (42035063).

Almost surely, 2144120212 is an apocalyptic number.

It is an amenable number.

144120212 is a deficient number, since it is larger than the sum of its proper divisors (108090166).

144120212 is a wasteful number, since it uses less digits than its factorization.

144120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36030057 (or 36030055 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 144120212 is about 12005.0077884190. The cubic root of 144120212 is about 524.2940922391.

Adding to 144120212 its reverse (212021441), we get a palindrome (356141653).

The spelling of 144120212 in words is "one hundred forty-four million, one hundred twenty thousand, two hundred twelve".

Divisors: 1 2 4 36030053 72060106 144120212