30402420142144 has 14 divisors (see below), whose sum is σ = 60329802469694. Its totient is φ = 15201210071040.

The previous prime is 30402420142141. The next prime is 30402420142177. The reversal of 30402420142144 is 44124102420403.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20194957454400 + 10207462687744 = 4493880^2 + 3194912^2 .

It is not an unprimeable number, because it can be changed into a prime (30402420142141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237518907297 + ... + 237518907424.

Almost surely, 2^{30402420142144} is an apocalyptic number.

It is an amenable number.

30402420142144 is a deficient number, since it is larger than the sum of its proper divisors (29927382327550).

30402420142144 is an equidigital number, since it uses as much as digits as its factorization.

30402420142144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475037814733 (or 475037814723 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 30402420142144 its reverse (44124102420403), we get a palindrome (74526522562547).

The spelling of 30402420142144 in words is "thirty trillion, four hundred two billion, four hundred twenty million, one hundred forty-two thousand, one hundred forty-four".