123412105502 has 12 divisors (see below), whose sum is σ = 215341531200. Its totient is φ = 52890902316.

The previous prime is 123412105463. The next prime is 123412105511. The reversal of 123412105502 is 205501214321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 629653502 + ... + 629653697.

It is an arithmetic number, because the mean of its divisors is an integer number (17945127600).

Almost surely, 2^123412105502 is an apocalyptic number.

123412105502 is a deficient number, since it is larger than the sum of its proper divisors (91929425698).

123412105502 is a wasteful number, since it uses less digits than its factorization.

123412105502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259307215 (or 1259307208 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 123412105502 its reverse (205501214321), we get a palindrome (328913319823).

The spelling of 123412105502 in words is "one hundred twenty-three billion, four hundred twelve million, one hundred five thousand, five hundred two".