30142443440 has 80 divisors (see below), whose sum is σ = 70685761536. Its totient is φ = 11953401600.

The previous prime is 30142443439. The next prime is 30142443469. The reversal of 30142443440 is 4434424103.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4748909 + ... + 4755251.

Almost surely, 2^30142443440 is an apocalyptic number.

It is an amenable number.

30142443440 is an abundant number, since it is smaller than the sum of its proper divisors (40543318096).

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

30142443440 is a wasteful number, since it uses less digits than its factorization.

30142443440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6858 (or 6852 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 30142443440 its reverse (4434424103), we get a palindrome (34576867543).

The spelling of 30142443440 in words is "thirty billion, one hundred forty-two million, four hundred forty-three thousand, four hundred forty".