30143042 has 4 divisors (see below), whose sum is σ = 45214566. Its totient is φ = 15071520.

The previous prime is 30143021. The next prime is 30143051. The reversal of 30143042 is 24034103.

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., 20151121 + 9991921 = 4489^2 + 3161^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30143042.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7535759 + ... + 7535762.

Almost surely, 2^30143042 is an apocalyptic number.

30143042 is a deficient number, since it is larger than the sum of its proper divisors (15071524).

30143042 is a wasteful number, since it uses less digits than its factorization.

30143042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15071523.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 30143042 is about 5490.2679351740. The cubic root of 30143042 is about 311.2163174897.

Adding to 30143042 its reverse (24034103), we get a palindrome (54177145).

The spelling of 30143042 in words is "thirty million, one hundred forty-three thousand, forty-two".