144414721 has 8 divisors (see below), whose sum is σ = 157745088. Its totient is φ = 131118000.

The previous prime is 144414703. The next prime is 144414731. The reversal of 144414721 is 127414441.

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

It is a cyclic number.

It is not a de Polignac number, because 144414721 - 2⁵ = 144414689 is a prime.

It is a super-2 number, since 2×144414721² = 41711223283015682, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144414721.

It is not an unprimeable number, because it can be changed into a prime (144414731) 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, 1036 + ... + 17026.

It is an arithmetic number, because the mean of its divisors is an integer number (19718136).

Almost surely, 2^144414721 is an apocalyptic number.

144414721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

144414721 is a deficient number, since it is larger than the sum of its proper divisors (13330367).

144414721 is a wasteful number, since it uses less digits than its factorization.

144414721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16823.

The product of its digits is 3584, while the sum is 28.

The square root of 144414721 is about 12017.2676178905. The cubic root of 144414721 is about 524.6509801168.

The spelling of 144414721 in words is "one hundred forty-four million, four hundred fourteen thousand, seven hundred twenty-one".