144542105 has 4 divisors (see below), whose sum is σ = 173450532. Its totient is φ = 115633680.

The previous prime is 144541997. The next prime is 144542131. The reversal of 144542105 is 501245441.

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

It can be written as a sum of positive squares in 2 ways, for example, as 106337344 + 38204761 = 10312^2 + 6181^2 .

It is not a de Polignac number, because 144542105 - 2²⁶ = 77433241 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14454206 + ... + 14454215.

It is an arithmetic number, because the mean of its divisors is an integer number (43362633).

Almost surely, 2^144542105 is an apocalyptic number.

It is an amenable number.

144542105 is a deficient number, since it is larger than the sum of its proper divisors (28908427).

144542105 is an equidigital number, since it uses as much as digits as its factorization.

144542105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28908426.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 144542105 is about 12022.5664897309. The cubic root of 144542105 is about 524.8051945427.

Adding to 144542105 its reverse (501245441), we get a palindrome (645787546).

The spelling of 144542105 in words is "one hundred forty-four million, five hundred forty-two thousand, one hundred five".