30243434142 has 32 divisors (see below), whose sum is σ = 61352779680. Its totient is φ = 9937699200.

The previous prime is 30243434141. The next prime is 30243434209. The reversal of 30243434142 is 24143434203.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30243434141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29808 + ... + 247740.

It is an arithmetic number, because the mean of its divisors is an integer number (1917274365).

Almost surely, 2^30243434142 is an apocalyptic number.

30243434142 is an abundant number, since it is smaller than the sum of its proper divisors (31109345538).

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

30243434142 is a wasteful number, since it uses less digits than its factorization.

30243434142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218268.

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 30243434142 its reverse (24143434203), we get a palindrome (54386868345).

The spelling of 30243434142 in words is "thirty billion, two hundred forty-three million, four hundred thirty-four thousand, one hundred forty-two".