30420040342 has 4 divisors (see below), whose sum is σ = 45630060516. Its totient is φ = 15210020170.

The previous prime is 30420040333. The next prime is 30420040367. The reversal of 30420040342 is 24304002403.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7605010084 + ... + 7605010087.

It is an arithmetic number, because the mean of its divisors is an integer number (11407515129).

Almost surely, 2^30420040342 is an apocalyptic number.

30420040342 is a deficient number, since it is larger than the sum of its proper divisors (15210020174).

30420040342 is a wasteful number, since it uses less digits than its factorization.

30420040342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15210020173.

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 30420040342 its reverse (24304002403), we get a palindrome (54724042745).

The spelling of 30420040342 in words is "thirty billion, four hundred twenty million, forty thousand, three hundred forty-two".