30420121432 has 16 divisors (see below), whose sum is σ = 57202106760. Its totient is φ = 15166226304.

The previous prime is 30420121397. The next prime is 30420121439. The reversal of 30420121432 is 23412102403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30420121439) 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, 5476353 + ... + 5481904.

Almost surely, 2^30420121432 is an apocalyptic number.

It is an amenable number.

30420121432 is a deficient number, since it is larger than the sum of its proper divisors (26781985328).

30420121432 is a wasteful number, since it uses less digits than its factorization.

30420121432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10958610 (or 10958606 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 30420121432 its reverse (23412102403), we get a palindrome (53832223835).

The spelling of 30420121432 in words is "thirty billion, four hundred twenty million, one hundred twenty-one thousand, four hundred thirty-two".