144835021 has 2 divisors, whose sum is σ = 144835022. Its totient is φ = 144835020.

The previous prime is 144835013. The next prime is 144835027. The reversal of 144835021 is 120538441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109432521 + 35402500 = 10461^2 + 5950^2 .

It is a cyclic number.

It is not a de Polignac number, because 144835021 - 2³ = 144835013 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144835027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72417510 + 72417511.

It is an arithmetic number, because the mean of its divisors is an integer number (72417511).

Almost surely, 2^144835021 is an apocalyptic number.

It is an amenable number.

144835021 is a deficient number, since it is larger than the sum of its proper divisors (1).

144835021 is an equidigital number, since it uses as much as digits as its factorization.

144835021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 144835021 is about 12034.7422490056. The cubic root of 144835021 is about 525.1594629734.

The spelling of 144835021 in words is "one hundred forty-four million, eight hundred thirty-five thousand, twenty-one".