30121223542 has 8 divisors (see below), whose sum is σ = 45240287616. Its totient is φ = 15041127672.

The previous prime is 30121223537. The next prime is 30121223579. The reversal of 30121223542 is 24532212103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9740118 + ... + 9743209.

It is an arithmetic number, because the mean of its divisors is an integer number (5655035952).

Almost surely, 2^30121223542 is an apocalyptic number.

30121223542 is a deficient number, since it is larger than the sum of its proper divisors (15119064074).

30121223542 is a wasteful number, since it uses less digits than its factorization.

30121223542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19484102.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 30121223542 its reverse (24532212103), we get a palindrome (54653435645).

The spelling of 30121223542 in words is "thirty billion, one hundred twenty-one million, two hundred twenty-three thousand, five hundred forty-two".