30142511 has 8 divisors (see below), whose sum is σ = 34598304. Its totient is φ = 25724160.

The previous prime is 30142507. The next prime is 30142543. The reversal of 30142511 is 11524103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30142511 - 2² = 30142507 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30142511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30142501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7610 + ... + 10871.

It is an arithmetic number, because the mean of its divisors is an integer number (4324788).

Almost surely, 2^30142511 is an apocalyptic number.

30142511 is a deficient number, since it is larger than the sum of its proper divisors (4455793).

30142511 is a wasteful number, since it uses less digits than its factorization.

30142511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18721.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 30142511 is about 5490.2195766654. The cubic root of 30142511 is about 311.2144900162.

Adding to 30142511 its reverse (11524103), we get a palindrome (41666614).

The spelling of 30142511 in words is "thirty million, one hundred forty-two thousand, five hundred eleven".