30142434012 has 12 divisors (see below), whose sum is σ = 70332346056. Its totient is φ = 10047478000.

The previous prime is 30142433987. The next prime is 30142434017. The reversal of 30142434012 is 21043424103.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×30142434012² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30142434017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1255934739 + ... + 1255934762.

It is an arithmetic number, because the mean of its divisors is an integer number (5861028838).

Almost surely, 2^30142434012 is an apocalyptic number.

It is an amenable number.

30142434012 is an abundant number, since it is smaller than the sum of its proper divisors (40189912044).

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

30142434012 is a wasteful number, since it uses less digits than its factorization.

30142434012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511869508 (or 2511869506 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 30142434012 its reverse (21043424103), we get a palindrome (51185858115).

Subtracting from 30142434012 its reverse (21043424103), we obtain a palindrome (9099009909).

The spelling of 30142434012 in words is "thirty billion, one hundred forty-two million, four hundred thirty-four thousand, twelve".