30744142 has 24 divisors (see below), whose sum is σ = 54482760. Its totient is φ = 12898080.

The previous prime is 30744127. The next prime is 30744149. The reversal of 30744142 is 24144703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30744149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 417 + ... + 7852.

It is an arithmetic number, because the mean of its divisors is an integer number (2270115).

Almost surely, 2^30744142 is an apocalyptic number.

30744142 is a deficient number, since it is larger than the sum of its proper divisors (23738618).

30744142 is a wasteful number, since it uses less digits than its factorization.

30744142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8308 (or 8295 counting only the distinct ones).

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

The square root of 30744142 is about 5544.7400299744. The cubic root of 30744142 is about 313.2714321156.

Adding to 30744142 its reverse (24144703), we get a palindrome (54888845).

The spelling of 30744142 in words is "thirty million, seven hundred forty-four thousand, one hundred forty-two".