30420142002 has 64 divisors (see below), whose sum is σ = 68577256320. Its totient is φ = 9993715200.

The previous prime is 30420141971. The next prime is 30420142007. The reversal of 30420142002 is 20024102403.

30420142002 is a `hidden beast` number, since 30 + 420 + 14 + 200 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (30420142007) 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, 8516877 + ... + 8520447.

It is an arithmetic number, because the mean of its divisors is an integer number (1071519630).

Almost surely, 2^30420142002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30420142002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34288628160).

30420142002 is an abundant number, since it is smaller than the sum of its proper divisors (38157114318).

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

30420142002 is a wasteful number, since it uses less digits than its factorization.

30420142002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5816 (or 5810 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 30420142002 its reverse (20024102403), we get a palindrome (50444244405).

The spelling of 30420142002 in words is "thirty billion, four hundred twenty million, one hundred forty-two thousand, two".