30142402121 has 6 divisors (see below), whose sum is σ = 32639406030. Its totient is φ = 27823755648.

The previous prime is 30142402039. The next prime is 30142402139. The reversal of 30142402121 is 12120424103.

It can be written as a sum of positive squares in 3 ways, for example, as 1058851600 + 29083550521 = 32540^2 + 170539^2 .

It is not a de Polignac number, because 30142402121 - 2¹⁴ = 30142385737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30142402093 and 30142402102.

It is not an unprimeable number, because it can be changed into a prime (30142402141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 89178536 + ... + 89178873.

It is an arithmetic number, because the mean of its divisors is an integer number (5439901005).

Almost surely, 2^30142402121 is an apocalyptic number.

It is an amenable number.

30142402121 is a deficient number, since it is larger than the sum of its proper divisors (2497003909).

30142402121 is a wasteful number, since it uses less digits than its factorization.

30142402121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178357435 (or 178357422 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 30142402121 its reverse (12120424103), we get a palindrome (42262826224).

The spelling of 30142402121 in words is "thirty billion, one hundred forty-two million, four hundred two thousand, one hundred twenty-one".