144020455 has 8 divisors (see below), whose sum is σ = 176501952. Its totient is φ = 112764768.

The previous prime is 144020441. The next prime is 144020473. The reversal of 144020455 is 554020441.

It is a happy number.

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 144020455 - 2¹⁵ = 143987687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306192 + ... + 306661.

It is an arithmetic number, because the mean of its divisors is an integer number (22062744).

Almost surely, 2^144020455 is an apocalyptic number.

144020455 is a deficient number, since it is larger than the sum of its proper divisors (32481497).

144020455 is an equidigital number, since it uses as much as digits as its factorization.

144020455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612905.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 144020455 is about 12000.8522614021. The cubic root of 144020455 is about 524.1730958451.

Adding to 144020455 its reverse (554020441), we get a palindrome (698040896).

The spelling of 144020455 in words is "one hundred forty-four million, twenty thousand, four hundred fifty-five".