144117544 has 8 divisors (see below), whose sum is σ = 270220410. Its totient is φ = 72058768.

The previous prime is 144117503. The next prime is 144117577. The reversal of 144117544 is 445711441.

It can be written as a sum of positive squares in only one way, i.e., 90973444 + 53144100 = 9538^2 + 7290^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9007339 + ... + 9007354.

Almost surely, 2^144117544 is an apocalyptic number.

It is an amenable number.

144117544 is a deficient number, since it is larger than the sum of its proper divisors (126102866).

144117544 is a wasteful number, since it uses less digits than its factorization.

144117544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18014699 (or 18014695 counting only the distinct ones).

The product of its digits is 8960, while the sum is 31.

The square root of 144117544 is about 12004.8966676103. The cubic root of 144117544 is about 524.2908569185.

Adding to 144117544 its reverse (445711441), we get a palindrome (589828985).

The spelling of 144117544 in words is "one hundred forty-four million, one hundred seventeen thousand, five hundred forty-four".