144420961 has 8 divisors (see below), whose sum is σ = 148047680. Its totient is φ = 140806512.

The previous prime is 144420949. The next prime is 144420973. The reversal of 144420961 is 169024441.

It is an interprime number because it is at equal distance from previous prime (144420949) and next prime (144420973).

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 144420961 - 2⁷ = 144420833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144420931) 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, 23620 + ... + 29098.

It is an arithmetic number, because the mean of its divisors is an integer number (18505960).

Almost surely, 2^144420961 is an apocalyptic number.

It is an amenable number.

144420961 is a deficient number, since it is larger than the sum of its proper divisors (3626719).

144420961 is an equidigital number, since it uses as much as digits as its factorization.

144420961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6135.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 144420961 is about 12017.5272414919. The cubic root of 144420961 is about 524.6585365370.

The spelling of 144420961 in words is "one hundred forty-four million, four hundred twenty thousand, nine hundred sixty-one".