30142655 has 8 divisors (see below), whose sum is σ = 36381312. Its totient is φ = 23974048.

The previous prime is 30142643. The next prime is 30142657. The reversal of 30142655 is 55624103.

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

It is a cyclic number.

It is not a de Polignac number, because 30142655 - 2⁴ = 30142639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30142657) by changing a digit.

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, 16559 + ... + 18288.

It is an arithmetic number, because the mean of its divisors is an integer number (4547664).

Almost surely, 2^30142655 is an apocalyptic number.

30142655 is a deficient number, since it is larger than the sum of its proper divisors (6238657).

30142655 is a wasteful number, since it uses less digits than its factorization.

30142655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35025.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 30142655 is about 5490.2326908793. The cubic root of 30142655 is about 311.2149856043.

Adding to 30142655 its reverse (55624103), we get a palindrome (85766758).

The spelling of 30142655 in words is "thirty million, one hundred forty-two thousand, six hundred fifty-five".