30142240442 has 4 divisors (see below), whose sum is σ = 45213360666. Its totient is φ = 15071120220.

The previous prime is 30142240397. The next prime is 30142240511. The reversal of 30142240442 is 24404224103.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 28123625401 + 2018615041 = 167701^2 + 44929^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7535560109 + ... + 7535560112.

Almost surely, 2^30142240442 is an apocalyptic number.

30142240442 is a deficient number, since it is larger than the sum of its proper divisors (15071120224).

30142240442 is a wasteful number, since it uses less digits than its factorization.

30142240442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15071120223.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 30142240442 its reverse (24404224103), we get a palindrome (54546464545).

The spelling of 30142240442 in words is "thirty billion, one hundred forty-two million, two hundred forty thousand, four hundred forty-two".