144264021 has 16 divisors (see below), whose sum is σ = 210083328. Its totient is φ = 87330800.

The previous prime is 144263969. The next prime is 144264031. The reversal of 144264021 is 120462441.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 144264021 - 2¹¹ = 144261973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 144263982 and 144264000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144264031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34000 + ... + 38006.

It is an arithmetic number, because the mean of its divisors is an integer number (13130208).

Almost surely, 2^144264021 is an apocalyptic number.

144264021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

144264021 is a deficient number, since it is larger than the sum of its proper divisors (65819307).

144264021 is a wasteful number, since it uses less digits than its factorization.

144264021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5112.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 144264021 is about 12010.9958371486. The cubic root of 144264021 is about 524.4684215796.

The spelling of 144264021 in words is "one hundred forty-four million, two hundred sixty-four thousand, twenty-one".