144640127 has 4 divisors (see below), whose sum is σ = 147369240. Its totient is φ = 141911016.

The previous prime is 144640091. The next prime is 144640129. The reversal of 144640127 is 721046441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 721046441 = 6353 ⋅113497.

It is a cyclic number.

It is not a de Polignac number, because 144640127 - 2⁸ = 144639871 is a prime.

It is a super-2 number, since 2×144640127² = 41841532677152258, 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 144640127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144640129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1364477 + ... + 1364582.

It is an arithmetic number, because the mean of its divisors is an integer number (36842310).

Almost surely, 2^144640127 is an apocalyptic number.

144640127 is a deficient number, since it is larger than the sum of its proper divisors (2729113).

144640127 is an equidigital number, since it uses as much as digits as its factorization.

144640127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2729112.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 144640127 is about 12026.6423826436. The cubic root of 144640127 is about 524.9238008835.

Adding to 144640127 its reverse (721046441), we get a palindrome (865686568).

The spelling of 144640127 in words is "one hundred forty-four million, six hundred forty thousand, one hundred twenty-seven".