30142852 has 6 divisors (see below), whose sum is σ = 52749998. Its totient is φ = 15071424.

The previous prime is 30142843. The next prime is 30142859. The reversal of 30142852 is 25824103.

It can be written as a sum of positive squares in only one way, i.e., 30096196 + 46656 = 5486^2 + 216^2 .

It is not an unprimeable number, because it can be changed into a prime (30142859) 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 as a sum of consecutive naturals, namely, 3767853 + ... + 3767860.

Almost surely, 2^30142852 is an apocalyptic number.

It is an amenable number.

30142852 is a deficient number, since it is larger than the sum of its proper divisors (22607146).

30142852 is a wasteful number, since it uses less digits than its factorization.

30142852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7535717 (or 7535715 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 30142852 is about 5490.2506318018. The cubic root of 30142852 is about 311.2156635939.

Adding to 30142852 its reverse (25824103), we get a palindrome (55966955).

The spelling of 30142852 in words is "thirty million, one hundred forty-two thousand, eight hundred fifty-two".