30142070 has 16 divisors (see below), whose sum is σ = 62006688. Its totient is φ = 10334400.

The previous prime is 30142061. The next prime is 30142103. The reversal of 30142070 is 7024103.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215231 + ... + 215370.

It is an arithmetic number, because the mean of its divisors is an integer number (3875418).

Almost surely, 2^30142070 is an apocalyptic number.

30142070 is an abundant number, since it is smaller than the sum of its proper divisors (31864618).

30142070 is a wasteful number, since it uses less digits than its factorization.

30142070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430615.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 30142070 is about 5490.1794141904. The cubic root of 30142070 is about 311.2129722676.

Adding to 30142070 its reverse (7024103), we get a palindrome (37166173).

The spelling of 30142070 in words is "thirty million, one hundred forty-two thousand, seventy".