144135761 has 16 divisors (see below), whose sum is σ = 182753280. Its totient is φ = 110406480.

The previous prime is 144135731. The next prime is 144135811. The reversal of 144135761 is 167531441.

It is a cyclic number.

It is not a de Polignac number, because 144135761 - 2⁶ = 144135697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144135731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11321 + ... + 20406.

It is an arithmetic number, because the mean of its divisors is an integer number (11422080).

Almost surely, 2^144135761 is an apocalyptic number.

144135761 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

144135761 is a deficient number, since it is larger than the sum of its proper divisors (38617519).

144135761 is a wasteful number, since it uses less digits than its factorization.

144135761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31804.

The product of its digits is 10080, while the sum is 32.

The square root of 144135761 is about 12005.6553756969. The cubic root of 144135761 is about 524.3129467670.

The spelling of 144135761 in words is "one hundred forty-four million, one hundred thirty-five thousand, seven hundred sixty-one".