144540234 has 64 divisors (see below), whose sum is σ = 346809600. Its totient is φ = 44485056.

The previous prime is 144540229. The next prime is 144540251. The reversal of 144540234 is 432045441.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 144540198 and 144540207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34012 + ... + 38024.

It is an arithmetic number, because the mean of its divisors is an integer number (5418900).

Almost surely, 2^144540234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144540234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173404800).

144540234 is an abundant number, since it is smaller than the sum of its proper divisors (202269366).

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

144540234 is a wasteful number, since it uses less digits than its factorization.

144540234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4076 (or 4070 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 144540234 is about 12022.4886774744. The cubic root of 144540234 is about 524.8029301165.

Adding to 144540234 its reverse (432045441), we get a palindrome (576585675).

The spelling of 144540234 in words is "one hundred forty-four million, five hundred forty thousand, two hundred thirty-four".