144229972 has 12 divisors (see below), whose sum is σ = 267249780. Its totient is φ = 67872896.

The previous prime is 144229937. The next prime is 144229991. The reversal of 144229972 is 279922441.

It can be written as a sum of positive squares in 2 ways, for example, as 115863696 + 28366276 = 10764^2 + 5326^2 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1060447 + ... + 1060582.

It is an arithmetic number, because the mean of its divisors is an integer number (22270815).

Almost surely, 2^144229972 is an apocalyptic number.

It is an amenable number.

144229972 is a deficient number, since it is larger than the sum of its proper divisors (123019808).

144229972 is a wasteful number, since it uses less digits than its factorization.

144229972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121050 (or 2121048 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 144229972 is about 12009.5783439719. The cubic root of 144229972 is about 524.4271568894.

The spelling of 144229972 in words is "one hundred forty-four million, two hundred twenty-nine thousand, nine hundred seventy-two".