30312442142 has 8 divisors (see below), whose sum is σ = 45641548656. Its totient is φ = 15098592592.

The previous prime is 30312442117. The next prime is 30312442157. The reversal of 30312442142 is 24124421303.

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

It is a super-2 number, since 2×30312442142² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 28813583 + ... + 28814634.

It is an arithmetic number, because the mean of its divisors is an integer number (5705193582).

Almost surely, 2^30312442142 is an apocalyptic number.

30312442142 is a deficient number, since it is larger than the sum of its proper divisors (15329106514).

30312442142 is a wasteful number, since it uses less digits than its factorization.

30312442142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57628482.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 30312442142 its reverse (24124421303), we get a palindrome (54436863445).

The spelling of 30312442142 in words is "thirty billion, three hundred twelve million, four hundred forty-two thousand, one hundred forty-two".