144161705 has 4 divisors (see below), whose sum is σ = 172994052. Its totient is φ = 115329360.

The previous prime is 144161681. The next prime is 144161747. The reversal of 144161705 is 507161441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 507161441 = 73 ⋅6947417.

It can be written as a sum of positive squares in 2 ways, for example, as 93296281 + 50865424 = 9659^2 + 7132^2 .

It is not a de Polignac number, because 144161705 - 2¹² = 144157609 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14416166 + ... + 14416175.

It is an arithmetic number, because the mean of its divisors is an integer number (43248513).

Almost surely, 2^144161705 is an apocalyptic number.

It is an amenable number.

144161705 is a deficient number, since it is larger than the sum of its proper divisors (28832347).

144161705 is an equidigital number, since it uses as much as digits as its factorization.

144161705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28832346.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 144161705 is about 12006.7358178649. The cubic root of 144161705 is about 524.3444031266.

The spelling of 144161705 in words is "one hundred forty-four million, one hundred sixty-one thousand, seven hundred five".