243320402142 has 20 divisors (see below), whose sum is σ = 545217938496. Its totient is φ = 81106800660.

The previous prime is 243320402029. The next prime is 243320402179. The reversal of 243320402142 is 241204023342.

243320402142 is a `hidden beast` number, since 2 + 433 + 204 + 0 + 21 + 4 + 2 = 666.

243320402142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 9 ways as a sum of consecutive naturals, for example, 750988734 + ... + 750989057.

Almost surely, 2^243320402142 is an apocalyptic number.

243320402142 is an abundant number, since it is smaller than the sum of its proper divisors (301897536354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243320402142 is a wasteful number, since it uses less digits than its factorization.

243320402142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501977805 (or 1501977796 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 243320402142 its reverse (241204023342), we get a palindrome (484524425484).

The spelling of 243320402142 in words is "two hundred forty-three billion, three hundred twenty million, four hundred two thousand, one hundred forty-two".