144138081 has 8 divisors (see below), whose sum is σ = 194343840. Its totient is φ = 95012192.

The previous prime is 144138077. The next prime is 144138103. The reversal of 144138081 is 180831441.

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 144138081 - 2² = 144138077 is a prime.

It is a super-2 number, since 2×144138081² = 41551572788725122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (144138031) 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, 269655 + ... + 270188.

It is an arithmetic number, because the mean of its divisors is an integer number (24292980).

Almost surely, 2^144138081 is an apocalyptic number.

It is an amenable number.

144138081 is a deficient number, since it is larger than the sum of its proper divisors (50205759).

144138081 is an equidigital number, since it uses as much as digits as its factorization.

144138081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539935.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 144138081 is about 12005.7519964390. The cubic root of 144138081 is about 524.3157598544.

The spelling of 144138081 in words is "one hundred forty-four million, one hundred thirty-eight thousand, eighty-one".