Search a number
-
+
144243401 = 7311631699
BaseRepresentation
bin10001001100011…
…11101011001001
3101001102022202012
420212033223021
5243411242101
622151345305
73401022461
oct1046175311
9331368665
10144243401
1174470225
1240382235
1323b64933
141522aba1
15c9e3bbb
hex898fac9

144243401 has 8 divisors (see below), whose sum is σ = 146431200. Its totient is φ = 142061472.

The previous prime is 144243311. The next prime is 144243409. The reversal of 144243401 is 104342441.

It is a happy number.

144243401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-144243401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144243409) 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, 84050 + ... + 85748.

It is an arithmetic number, because the mean of its divisors is an integer number (18303900).

Almost surely, 2144243401 is an apocalyptic number.

It is an amenable number.

144243401 is a deficient number, since it is larger than the sum of its proper divisors (2187799).

144243401 is a wasteful number, since it uses less digits than its factorization.

144243401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2935.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 144243401 is about 12010.1374263578. The cubic root of 144243401 is about 524.4434325489.

Adding to 144243401 its reverse (104342441), we get a palindrome (248585842).

The spelling of 144243401 in words is "one hundred forty-four million, two hundred forty-three thousand, four hundred one".

Divisors: 1 73 1163 1699 84899 124027 1975937 144243401