30355140120420 has 96 divisors (see below), whose sum is σ = 85328114320512. Its totient is φ = 8062958711808.

The previous prime is 30355140120359. The next prime is 30355140120427. The reversal of 30355140120420 is 2402104155303.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (30355140120427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25196319 + ... + 26373561.

It is an arithmetic number, because the mean of its divisors is an integer number (888834524172).

Almost surely, 2^{30355140120420} is an apocalyptic number.

30355140120420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30355140120420 is an abundant number, since it is smaller than the sum of its proper divisors (54972974200092).

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

30355140120420 is a wasteful number, since it uses less digits than its factorization.

30355140120420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178941 (or 1178939 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 30355140120420 its reverse (2402104155303), we get a palindrome (32757244275723).

The spelling of 30355140120420 in words is "thirty trillion, three hundred fifty-five billion, one hundred forty million, one hundred twenty thousand, four hundred twenty".