30420155430 has 48 divisors (see below), whose sum is σ = 90391320864. Its totient is φ = 6953178240.

The previous prime is 30420155429. The next prime is 30420155459. The reversal of 30420155430 is 3455102403.

It is a junction number, because it is equal to n+sod(n) for n = 30420155394 and 30420155403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24142351 + ... + 24143610.

It is an arithmetic number, because the mean of its divisors is an integer number (1883152518).

Almost surely, 2^30420155430 is an apocalyptic number.

30420155430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30420155430 is an abundant number, since it is smaller than the sum of its proper divisors (59971165434).

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

30420155430 is a wasteful number, since it uses less digits than its factorization.

30420155430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48285981 (or 48285978 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 30420155430 its reverse (3455102403), we get a palindrome (33875257833).

The spelling of 30420155430 in words is "thirty billion, four hundred twenty million, one hundred fifty-five thousand, four hundred thirty".