144434140 has 12 divisors (see below), whose sum is σ = 303311736. Its totient is φ = 57773648.

The previous prime is 144434131. The next prime is 144434189. The reversal of 144434140 is 41434441.

It is a happy number.

It is a super-2 number, since 2×144434140² = 41722441595079200, which contains 22 as substring.

It is a congruent 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, 3610834 + ... + 3610873.

It is an arithmetic number, because the mean of its divisors is an integer number (25275978).

Almost surely, 2^144434140 is an apocalyptic number.

144434140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144434140 is an abundant number, since it is smaller than the sum of its proper divisors (158877596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144434140 is a wasteful number, since it uses less digits than its factorization.

144434140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7221716 (or 7221714 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 144434140 is about 12018.0755530992. The cubic root of 144434140 is about 524.6744951266.

Adding to 144434140 its reverse (41434441), we get a palindrome (185868581).

The spelling of 144434140 in words is "one hundred forty-four million, four hundred thirty-four thousand, one hundred forty".