30142421344 has 72 divisors (see below), whose sum is σ = 69096729240. Its totient is φ = 12905980416.

The previous prime is 30142421317. The next prime is 30142421371. The reversal of 30142421344 is 44312424103.

It is an interprime number because it is at equal distance from previous prime (30142421317) and next prime (30142421371).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1761759 + ... + 1778785.

It is an arithmetic number, because the mean of its divisors is an integer number (959676795).

Almost surely, 2^30142421344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30142421344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34548364620).

30142421344 is an abundant number, since it is smaller than the sum of its proper divisors (38954307896).

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

30142421344 is a wasteful number, since it uses less digits than its factorization.

30142421344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18180 (or 18165 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 30142421344 its reverse (44312424103), we get a palindrome (74454845447).

The spelling of 30142421344 in words is "thirty billion, one hundred forty-two million, four hundred twenty-one thousand, three hundred forty-four".