144236621 has 2 divisors, whose sum is σ = 144236622. Its totient is φ = 144236620.

The previous prime is 144236597. The next prime is 144236629. The reversal of 144236621 is 126632441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91891396 + 52345225 = 9586^2 + 7235^2 .

It is a cyclic number.

It is not a de Polignac number, because 144236621 - 2⁶ = 144236557 is a prime.

It is a pancake number, because a pancake can be divided into 144236621 parts by 16984 straight cuts.

It is equal to p_8138054 and since 144236621 and 8138054 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144236629) by changing a digit.

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 as a sum of consecutive naturals, namely, 72118310 + 72118311.

It is an arithmetic number, because the mean of its divisors is an integer number (72118311).

Almost surely, 2^144236621 is an apocalyptic number.

It is an amenable number.

144236621 is a deficient number, since it is larger than the sum of its proper divisors (1).

144236621 is an equidigital number, since it uses as much as digits as its factorization.

144236621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 29.

The square root of 144236621 is about 12009.8551614913. The cubic root of 144236621 is about 524.4352154608.

The spelling of 144236621 in words is "one hundred forty-four million, two hundred thirty-six thousand, six hundred twenty-one".