123012240124544 has 16 divisors (see below), whose sum is σ = 245063447123370. Its totient is φ = 61506120062208.

The previous prime is 123012240124523. The next prime is 123012240124591. The reversal of 123012240124544 is 445421042210321.

It can be written as a sum of positive squares in only one way, i.e., 92064025000000 + 30948215124544 = 9595000^2 + 5563112^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×123012240124544² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480516562859 + ... + 480516563114.

Almost surely, 2^{123012240124544} is an apocalyptic number.

It is an amenable number.

123012240124544 is a deficient number, since it is larger than the sum of its proper divisors (122051206998826).

123012240124544 is an frugal number, since it uses more digits than its factorization.

123012240124544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961033125987 (or 961033125975 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 35.

Adding to 123012240124544 its reverse (445421042210321), we get a palindrome (568433282334865).

The spelling of 123012240124544 in words is "one hundred twenty-three trillion, twelve billion, two hundred forty million, one hundred twenty-four thousand, five hundred forty-four".