30123021424440 has 128 divisors (see below), whose sum is σ = 105029421120000. Its totient is φ = 6768562672128.

The previous prime is 30123021424429. The next prime is 30123021424487. The reversal of 30123021424440 is 4442412032103.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 30123021424398 and 30123021424407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 303855015 + ... + 303954134.

It is an arithmetic number, because the mean of its divisors is an integer number (820542352500).

Almost surely, 2^{30123021424440} is an apocalyptic number.

30123021424440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30123021424440 is an abundant number, since it is smaller than the sum of its proper divisors (74906399695560).

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

30123021424440 is a wasteful number, since it uses less digits than its factorization.

30123021424440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607809229 (or 607809225 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 30123021424440 its reverse (4442412032103), we get a palindrome (34565433456543).

The spelling of 30123021424440 in words is "thirty trillion, one hundred twenty-three billion, twenty-one million, four hundred twenty-four thousand, four hundred forty".