30154242021 has 16 divisors (see below), whose sum is σ = 41832495360. Its totient is φ = 19297423040.

The previous prime is 30154241989. The next prime is 30154242071. The reversal of 30154242021 is 12024245103.

It is a cyclic number.

It is not a de Polignac number, because 30154242021 - 2⁵ = 30154241989 is a prime.

It is a super-2 number, since 2×30154242021² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30154241982 and 30154242000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30154242071) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 986685 + ... + 1016786.

It is an arithmetic number, because the mean of its divisors is an integer number (2614530960).

Almost surely, 2^30154242021 is an apocalyptic number.

It is an amenable number.

30154242021 is a deficient number, since it is larger than the sum of its proper divisors (11678253339).

30154242021 is a wasteful number, since it uses less digits than its factorization.

30154242021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003676.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 30154242021 its reverse (12024245103), we get a palindrome (42178487124).

The spelling of 30154242021 in words is "thirty billion, one hundred fifty-four million, two hundred forty-two thousand, twenty-one".