30243403142 has 4 divisors (see below), whose sum is σ = 45365104716. Its totient is φ = 15121701570.

The previous prime is 30243403129. The next prime is 30243403147. The reversal of 30243403142 is 24130434203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24130434203 = 241 ⋅100126283.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30243403147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7560850784 + ... + 7560850787.

It is an arithmetic number, because the mean of its divisors is an integer number (11341276179).

Almost surely, 2^30243403142 is an apocalyptic number.

30243403142 is a deficient number, since it is larger than the sum of its proper divisors (15121701574).

30243403142 is a wasteful number, since it uses less digits than its factorization.

30243403142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15121701573.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 30243403142 its reverse (24130434203), we get a palindrome (54373837345).

The spelling of 30243403142 in words is "thirty billion, two hundred forty-three million, four hundred three thousand, one hundred forty-two".