30042120434 has 4 divisors (see below), whose sum is σ = 45063180654. Its totient is φ = 15021060216.

The previous prime is 30042120413. The next prime is 30042120439. The reversal of 30042120434 is 43402124003.

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., 16781907025 + 13260213409 = 129545^2 + 115153^2 .

It is not an unprimeable number, because it can be changed into a prime (30042120439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7510530107 + ... + 7510530110.

Almost surely, 2^30042120434 is an apocalyptic number.

30042120434 is a deficient number, since it is larger than the sum of its proper divisors (15021060220).

30042120434 is a wasteful number, since it uses less digits than its factorization.

30042120434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15021060219.

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

Adding to 30042120434 its reverse (43402124003), we get a palindrome (73444244437).

The spelling of 30042120434 in words is "thirty billion, forty-two million, one hundred twenty thousand, four hundred thirty-four".