30859142 has 16 divisors (see below), whose sum is σ = 47628000. Its totient is φ = 14986560.

The previous prime is 30859141. The next prime is 30859159. The reversal of 30859142 is 24195803.

It is a junction number, because it is equal to n+sod(n) for n = 30859099 and 30859108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30859141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21359 + ... + 22757.

It is an arithmetic number, because the mean of its divisors is an integer number (2976750).

Almost surely, 2^30859142 is an apocalyptic number.

30859142 is a deficient number, since it is larger than the sum of its proper divisors (16768858).

30859142 is a wasteful number, since it uses less digits than its factorization.

30859142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 30859142 is about 5555.1005391442. The cubic root of 30859142 is about 313.6615485864.

The spelling of 30859142 in words is "thirty million, eight hundred fifty-nine thousand, one hundred forty-two".