30122142 has 16 divisors (see below), whose sum is σ = 62188032. Its totient is φ = 9716760.

The previous prime is 30122137. The next prime is 30122153. The reversal of 30122142 is 24122103.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 80788 + ... + 81159.

It is an arithmetic number, because the mean of its divisors is an integer number (3886752).

Almost surely, 2^30122142 is an apocalyptic number.

30122142 is an abundant number, since it is smaller than the sum of its proper divisors (32065890).

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

30122142 is a wasteful number, since it uses less digits than its factorization.

30122142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161983.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 30122142 is about 5488.3642371840. The cubic root of 30122142 is about 311.1443724737.

Adding to 30122142 its reverse (24122103), we get a palindrome (54244245).

The spelling of 30122142 in words is "thirty million, one hundred twenty-two thousand, one hundred forty-two".