12420240734 has 16 divisors (see below), whose sum is σ = 20873329776. Its totient is φ = 5492980800.

The previous prime is 12420240713. The next prime is 12420240797. The reversal of 12420240734 is 43704202421.

It is a junction number, because it is equal to n+sod(n) for n = 12420240697 and 12420240706.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7628327 + ... + 7629954.

It is an arithmetic number, because the mean of its divisors is an integer number (1304583111).

Almost surely, 2^12420240734 is an apocalyptic number.

12420240734 is a deficient number, since it is larger than the sum of its proper divisors (8453089042).

12420240734 is a wasteful number, since it uses less digits than its factorization.

12420240734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15258331.

The product of its (nonzero) digits is 10752, while the sum is 29.

The spelling of 12420240734 in words is "twelve billion, four hundred twenty million, two hundred forty thousand, seven hundred thirty-four".