30442151 has 4 divisors (see below), whose sum is σ = 31150152. Its totient is φ = 29734152.

The previous prime is 30442129. The next prime is 30442177. The reversal of 30442151 is 15124403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15124403 = 7 ⋅2160629.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30442151 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 (30442051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353936 + ... + 354021.

It is an arithmetic number, because the mean of its divisors is an integer number (7787538).

Almost surely, 2^30442151 is an apocalyptic number.

30442151 is a deficient number, since it is larger than the sum of its proper divisors (708001).

30442151 is an equidigital number, since it uses as much as digits as its factorization.

30442151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708000.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 30442151 is about 5517.4406204326. The cubic root of 30442151 is about 312.2423296776.

Adding to 30442151 its reverse (15124403), we get a palindrome (45566554).

The spelling of 30442151 in words is "thirty million, four hundred forty-two thousand, one hundred fifty-one".