144021434 has 12 divisors (see below), whose sum is σ = 218687226. Its totient is φ = 71136312.

The previous prime is 144021407. The next prime is 144021439. The reversal of 144021434 is 434120441.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 81848209 + 62173225 = 9047^2 + 7885^2 .

It is not an unprimeable number, because it can be changed into a prime (144021439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8552 + ... + 19004.

Almost surely, 2^144021434 is an apocalyptic number.

144021434 is a deficient number, since it is larger than the sum of its proper divisors (74665792).

144021434 is an equidigital number, since it uses as much as digits as its factorization.

144021434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10621 (or 10538 counting only the distinct ones).

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

The square root of 144021434 is about 12000.8930501026. The cubic root of 144021434 is about 524.1742835567.

Adding to 144021434 its reverse (434120441), we get a palindrome (578141875).

The spelling of 144021434 in words is "one hundred forty-four million, twenty-one thousand, four hundred thirty-four".