30400121420 has 24 divisors (see below), whose sum is σ = 63860320944. Its totient is φ = 12156226496.

The previous prime is 30400121419. The next prime is 30400121443. The reversal of 30400121420 is 2412100403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173219 + ... + 301338.

It is an arithmetic number, because the mean of its divisors is an integer number (2660846706).

Almost surely, 2^30400121420 is an apocalyptic number.

It is an amenable number.

30400121420 is an abundant number, since it is smaller than the sum of its proper divisors (33460199524).

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

30400121420 is a wasteful number, since it uses less digits than its factorization.

30400121420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477769 (or 477767 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 30400121420 its reverse (2412100403), we get a palindrome (32812221823).

The spelling of 30400121420 in words is "thirty billion, four hundred million, one hundred twenty-one thousand, four hundred twenty".