120001143544 has 8 divisors (see below), whose sum is σ = 225002144160. Its totient is φ = 60000571768.

The previous prime is 120001143539. The next prime is 120001143547. The reversal of 120001143544 is 445341100021.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120001143547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7500071464 + ... + 7500071479.

It is an arithmetic number, because the mean of its divisors is an integer number (28125268020).

Almost surely, 2^120001143544 is an apocalyptic number.

It is an amenable number.

120001143544 is a deficient number, since it is larger than the sum of its proper divisors (105001000616).

120001143544 is a wasteful number, since it uses less digits than its factorization.

120001143544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15000142949 (or 15000142945 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 120001143544 its reverse (445341100021), we get a palindrome (565342243565).

The spelling of 120001143544 in words is "one hundred twenty billion, one million, one hundred forty-three thousand, five hundred forty-four".