30170142 has 24 divisors (see below), whose sum is σ = 66007344. Its totient is φ = 9958464.

The previous prime is 30170117. The next prime is 30170149. The reversal of 30170142 is 24107103.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30170149) 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 in 11 ways as a sum of consecutive naturals, for example, 6283 + ... + 9990.

It is an arithmetic number, because the mean of its divisors is an integer number (2750306).

Almost surely, 2^30170142 is an apocalyptic number.

30170142 is an abundant number, since it is smaller than the sum of its proper divisors (35837202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30170142 is a wasteful number, since it uses less digits than its factorization.

30170142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16384 (or 16381 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 30170142 is about 5492.7353841233. The cubic root of 30170142 is about 311.3095555462.

Adding to 30170142 its reverse (24107103), we get a palindrome (54277245).

The spelling of 30170142 in words is "thirty million, one hundred seventy thousand, one hundred forty-two".