30420322142 has 16 divisors (see below), whose sum is σ = 52153164672. Its totient is φ = 13036270680.

The previous prime is 30420322091. The next prime is 30420322181. The reversal of 30420322142 is 24122302403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120017 + ... + 274307.

It is an arithmetic number, because the mean of its divisors is an integer number (3259572792).

Almost surely, 2^30420322142 is an apocalyptic number.

30420322142 is a deficient number, since it is larger than the sum of its proper divisors (21732842530).

30420322142 is a wasteful number, since it uses less digits than its factorization.

30420322142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168383.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 30420322142 its reverse (24122302403), we get a palindrome (54542624545).

The spelling of 30420322142 in words is "thirty billion, four hundred twenty million, three hundred twenty-two thousand, one hundred forty-two".