144420755 has 4 divisors (see below), whose sum is σ = 173304912. Its totient is φ = 115536600.

The previous prime is 144420743. The next prime is 144420799. The reversal of 144420755 is 557024441.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 144420755 - 2¹⁴ = 144404371 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14442071 + ... + 14442080.

It is an arithmetic number, because the mean of its divisors is an integer number (43326228).

Almost surely, 2^144420755 is an apocalyptic number.

144420755 is a deficient number, since it is larger than the sum of its proper divisors (28884157).

144420755 is an equidigital number, since it uses as much as digits as its factorization.

144420755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28884156.

The product of its (nonzero) digits is 22400, while the sum is 32.

The square root of 144420755 is about 12017.5186706741. The cubic root of 144420755 is about 524.6582870818.

The spelling of 144420755 in words is "one hundred forty-four million, four hundred twenty thousand, seven hundred fifty-five".