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144124451 = 251574201
BaseRepresentation
bin10001001011100…
…10101000100011
3101001012021120122
420211302220203
5243343440301
622145030455
73400015622
oct1045625043
9331167518
10144124451
1174399919
124032542b
1323b22753
14151d96b9
15c9bd81b
hex8972a23

144124451 has 4 divisors (see below), whose sum is σ = 144698904. Its totient is φ = 143550000.

The previous prime is 144124447. The next prime is 144124469. The reversal of 144124451 is 154421441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 144124451 - 22 = 144124447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144124451.

It is not an unprimeable number, because it can be changed into a prime (144124441) 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, 286850 + ... + 287351.

It is an arithmetic number, because the mean of its divisors is an integer number (36174726).

Almost surely, 2144124451 is an apocalyptic number.

144124451 is a deficient number, since it is larger than the sum of its proper divisors (574453).

144124451 is an equidigital number, since it uses as much as digits as its factorization.

144124451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574452.

The product of its digits is 2560, while the sum is 26.

The square root of 144124451 is about 12005.1843384431. The cubic root of 144124451 is about 524.2992325333.

Adding to 144124451 its reverse (154421441), we get a palindrome (298545892).

The spelling of 144124451 in words is "one hundred forty-four million, one hundred twenty-four thousand, four hundred fifty-one".

Divisors: 1 251 574201 144124451