12435531242 has 8 divisors (see below), whose sum is σ = 18693760932. Its totient is φ = 6204277600.

The previous prime is 12435531223. The next prime is 12435531247. The reversal of 12435531242 is 24213553421.

It can be written as a sum of positive squares in 2 ways, for example, as 12221523601 + 214007641 = 110551^2 + 14629^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 12435531199 and 12435531208.

It is not an unprimeable number, because it can be changed into a prime (12435531247) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6742859 + ... + 6744702.

Almost surely, 2^12435531242 is an apocalyptic number.

12435531242 is a deficient number, since it is larger than the sum of its proper divisors (6258229690).

12435531242 is a wasteful number, since it uses less digits than its factorization.

12435531242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13488024.

The product of its digits is 28800, while the sum is 32.

The spelling of 12435531242 in words is "twelve billion, four hundred thirty-five million, five hundred thirty-one thousand, two hundred forty-two".