30452142 has 32 divisors (see below), whose sum is σ = 70790400. Its totient is φ = 8552448.

The previous prime is 30452111. The next prime is 30452143. The reversal of 30452142 is 24125403.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30452143) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3667 + ... + 8622.

It is an arithmetic number, because the mean of its divisors is an integer number (2212200).

Almost surely, 2^30452142 is an apocalyptic number.

30452142 is an abundant number, since it is smaller than the sum of its proper divisors (40338258).

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

30452142 is a wasteful number, since it uses less digits than its factorization.

30452142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12360.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 30452142 is about 5518.3459478362. The cubic root of 30452142 is about 312.2764848626.

Adding to 30452142 its reverse (24125403), we get a palindrome (54577545).

The spelling of 30452142 in words is "thirty million, four hundred fifty-two thousand, one hundred forty-two".