30142250 has 16 divisors (see below), whose sum is σ = 56426760. Its totient is φ = 12056800.

The previous prime is 30142247. The next prime is 30142267. The reversal of 30142250 is 5224103.

It can be written as a sum of positive squares in 4 ways, for example, as 2778889 + 27363361 = 1667^2 + 5231^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60035 + ... + 60534.

Almost surely, 2^30142250 is an apocalyptic number.

30142250 is a deficient number, since it is larger than the sum of its proper divisors (26284510).

30142250 is a wasteful number, since it uses less digits than its factorization.

30142250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120586 (or 120576 counting only the distinct ones).

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

The square root of 30142250 is about 5490.1958070728. The cubic root of 30142250 is about 311.2135917586.

Adding to 30142250 its reverse (5224103), we get a palindrome (35366353).

The spelling of 30142250 in words is "thirty million, one hundred forty-two thousand, two hundred fifty".