30421243442440 has 64 divisors (see below), whose sum is σ = 68480960400000. Its totient is φ = 12162603340800.

The previous prime is 30421243442419. The next prime is 30421243442459. The reversal of 30421243442440 is 4424434212403.

It is a self number, because there is not a number n which added to its sum of digits gives 30421243442440.

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, 770157811 + ... + 770197309.

It is an arithmetic number, because the mean of its divisors is an integer number (1070015006250).

Almost surely, 2^{30421243442440} is an apocalyptic number.

It is an amenable number.

30421243442440 is an abundant number, since it is smaller than the sum of its proper divisors (38059716957560).

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

30421243442440 is a wasteful number, since it uses less digits than its factorization.

30421243442440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48350 (or 48346 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 37.

Adding to 30421243442440 its reverse (4424434212403), we get a palindrome (34845677654843).

The spelling of 30421243442440 in words is "thirty trillion, four hundred twenty-one billion, two hundred forty-three million, four hundred forty-two thousand, four hundred forty".