30152042 has 4 divisors (see below), whose sum is σ = 45228066. Its totient is φ = 15076020.

The previous prime is 30152041. The next prime is 30152063. The reversal of 30152042 is 24025103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24025103 = 73 ⋅329111.

It can be written as a sum of positive squares in only one way, i.e., 30151081 + 961 = 5491^2 + 31^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30152042.

It is not an unprimeable number, because it can be changed into a prime (30152041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7538009 + ... + 7538012.

Almost surely, 2^30152042 is an apocalyptic number.

30152042 is a deficient number, since it is larger than the sum of its proper divisors (15076024).

30152042 is a wasteful number, since it uses less digits than its factorization.

30152042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15076023.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 30152042 is about 5491.0875061321. The cubic root of 30152042 is about 311.2472883534.

Adding to 30152042 its reverse (24025103), we get a palindrome (54177145).

The spelling of 30152042 in words is "thirty million, one hundred fifty-two thousand, forty-two".