144235021 has 16 divisors (see below), whose sum is σ = 175011840. Its totient is φ = 116040960.

The previous prime is 144234983. The next prime is 144235027. The reversal of 144235021 is 120532441.

It is not a de Polignac number, because 144235021 - 2¹⁹ = 143710733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144234983 and 144235001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144235027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48660 + ... + 51538.

It is an arithmetic number, because the mean of its divisors is an integer number (10938240).

Almost surely, 2^144235021 is an apocalyptic number.

It is an amenable number.

144235021 is a deficient number, since it is larger than the sum of its proper divisors (30776819).

144235021 is a wasteful number, since it uses less digits than its factorization.

144235021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3324.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 144235021 is about 12009.7885493459. The cubic root of 144235021 is about 524.4332762875.

Adding to 144235021 its reverse (120532441), we get a palindrome (264767462).

It can be divided in two parts, 1442 and 35021, that added together give a palindrome (36463).

The spelling of 144235021 in words is "one hundred forty-four million, two hundred thirty-five thousand, twenty-one".