30402121124 has 12 divisors (see below), whose sum is σ = 53205323724. Its totient is φ = 15200600064.

The previous prime is 30402121121. The next prime is 30402121193. The reversal of 30402121124 is 42112120403.

It can be written as a sum of positive squares in 2 ways, for example, as 11679124900 + 18722996224 = 108070^2 + 136832^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30402121096 and 30402121105.

It is not an unprimeable number, because it can be changed into a prime (30402121121) 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, 64592 + ... + 254904.

It is an arithmetic number, because the mean of its divisors is an integer number (4433776977).

Almost surely, 2^30402121124 is an apocalyptic number.

It is an amenable number.

30402121124 is a deficient number, since it is larger than the sum of its proper divisors (22803202600).

30402121124 is a wasteful number, since it uses less digits than its factorization.

30402121124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230254 (or 230252 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 30402121124 its reverse (42112120403), we get a palindrome (72514241527).

The spelling of 30402121124 in words is "thirty billion, four hundred two million, one hundred twenty-one thousand, one hundred twenty-four".