12420135152042 has 16 divisors (see below), whose sum is σ = 18666488626632. Its totient is φ = 6197972951040.

The previous prime is 12420135152003. The next prime is 12420135152057. The reversal of 12420135152042 is 24025153102421.

It can be written as a sum of positive squares in 4 ways, for example, as 9365368763521 + 3054766388521 = 3060289^2 + 1747789^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41732828 + ... + 42029384.

Almost surely, 2^{12420135152042} is an apocalyptic number.

12420135152042 is a deficient number, since it is larger than the sum of its proper divisors (6246353474590).

12420135152042 is a wasteful number, since it uses less digits than its factorization.

12420135152042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337273.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 12420135152042 its reverse (24025153102421), we get a palindrome (36445288254463).

The spelling of 12420135152042 in words is "twelve trillion, four hundred twenty billion, one hundred thirty-five million, one hundred fifty-two thousand, forty-two".