30142042220 has 48 divisors (see below), whose sum is σ = 63769794816. Its totient is φ = 11967264000.

The previous prime is 30142042213. The next prime is 30142042223. The reversal of 30142042220 is 2224024103.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 30142042192 and 30142042201.

It is not an unprimeable number, because it can be changed into a prime (30142042223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1950725 + ... + 1966115.

It is an arithmetic number, because the mean of its divisors is an integer number (1328537392).

Almost surely, 2^30142042220 is an apocalyptic number.

It is an amenable number.

30142042220 is an abundant number, since it is smaller than the sum of its proper divisors (33627752596).

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

30142042220 is a wasteful number, since it uses less digits than its factorization.

30142042220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16122 (or 16120 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 30142042220 its reverse (2224024103), we get a palindrome (32366066323).

The spelling of 30142042220 in words is "thirty billion, one hundred forty-two million, forty-two thousand, two hundred twenty".