144320434 has 4 divisors (see below), whose sum is σ = 216480654. Its totient is φ = 72160216.

The previous prime is 144320417. The next prime is 144320441. The reversal of 144320434 is 434023441.

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

It can be written as a sum of positive squares in only one way, i.e., 94575625 + 49744809 = 9725^2 + 7053^2 .

It is a junction number, because it is equal to n+sod(n) for n = 144320399 and 144320408.

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 as a sum of consecutive naturals, namely, 36080107 + ... + 36080110.

Almost surely, 2^144320434 is an apocalyptic number.

144320434 is a deficient number, since it is larger than the sum of its proper divisors (72160220).

144320434 is an equidigital number, since it uses as much as digits as its factorization.

144320434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72160219.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 144320434 is about 12013.3439974056. The cubic root of 144320434 is about 524.5367753778.

Adding to 144320434 its reverse (434023441), we get a palindrome (578343875).

The spelling of 144320434 in words is "one hundred forty-four million, three hundred twenty thousand, four hundred thirty-four".