30103142 has 4 divisors (see below), whose sum is σ = 45154716. Its totient is φ = 15051570.

The previous prime is 30103133. The next prime is 30103169. The reversal of 30103142 is 24130103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24130103 = 149 ⋅161947.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7525784 + ... + 7525787.

It is an arithmetic number, because the mean of its divisors is an integer number (11288679).

Almost surely, 2^30103142 is an apocalyptic number.

30103142 is a deficient number, since it is larger than the sum of its proper divisors (15051574).

30103142 is a wasteful number, since it uses less digits than its factorization.

30103142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15051573.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 30103142 is about 5486.6330294635. The cubic root of 30103142 is about 311.0789390296.

Adding to 30103142 its reverse (24130103), we get a palindrome (54233245).

The spelling of 30103142 in words is "thirty million, one hundred three thousand, one hundred forty-two".