30142744 has 32 divisors (see below), whose sum is σ = 57676320. Its totient is φ = 14766336.

The previous prime is 30142727. The next prime is 30142747. The reversal of 30142744 is 44724103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30142747) 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 7 ways as a sum of consecutive naturals, for example, 129252 + ... + 129484.

It is an arithmetic number, because the mean of its divisors is an integer number (1802385).

Almost surely, 2^30142744 is an apocalyptic number.

It is an amenable number.

30142744 is a deficient number, since it is larger than the sum of its proper divisors (27533576).

30142744 is a wasteful number, since it uses less digits than its factorization.

30142744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499 (or 495 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 30142744 is about 5490.2407961764. The cubic root of 30142744 is about 311.2152919046.

Adding to 30142744 its reverse (44724103), we get a palindrome (74866847).

The spelling of 30142744 in words is "thirty million, one hundred forty-two thousand, seven hundred forty-four".