144421057 has 8 divisors (see below), whose sum is σ = 157951872. Its totient is φ = 130957200.

The previous prime is 144421037. The next prime is 144421061. The reversal of 144421057 is 750124441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 144421057 - 2¹⁵ = 144388289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144421007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12169 + ... + 20902.

It is an arithmetic number, because the mean of its divisors is an integer number (19743984).

Almost surely, 2^144421057 is an apocalyptic number.

It is an amenable number.

144421057 is a deficient number, since it is larger than the sum of its proper divisors (13530815).

144421057 is a wasteful number, since it uses less digits than its factorization.

144421057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33479.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 144421057 is about 12017.5312356573. The cubic root of 144421057 is about 524.6586527880.

Adding to 144421057 its reverse (750124441), we get a palindrome (894545498).

It can be divided in two parts, 144 and 421057, that added together give a square (421201 = 649²).

The spelling of 144421057 in words is "one hundred forty-four million, four hundred twenty-one thousand, fifty-seven".