30142404440 has 16 divisors (see below), whose sum is σ = 67820410080. Its totient is φ = 12056961760.

The previous prime is 30142404419. The next prime is 30142404443. The reversal of 30142404440 is 4440424103.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30142404443) 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, 376780016 + ... + 376780095.

It is an arithmetic number, because the mean of its divisors is an integer number (4238775630).

Almost surely, 2^30142404440 is an apocalyptic number.

It is an amenable number.

30142404440 is an abundant number, since it is smaller than the sum of its proper divisors (37678005640).

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

30142404440 is a wasteful number, since it uses less digits than its factorization.

30142404440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753560122 (or 753560118 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 30142404440 its reverse (4440424103), we get a palindrome (34582828543).

The spelling of 30142404440 in words is "thirty billion, one hundred forty-two million, four hundred four thousand, four hundred forty".