30679142 has 16 divisors (see below), whose sum is σ = 50899632. Its totient is φ = 13776480.

The previous prime is 30679141. The next prime is 30679183. The reversal of 30679142 is 24197603.

It is a junction number, because it is equal to n+sod(n) for n = 30679099 and 30679108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30679141) 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, 14984 + ... + 16907.

It is an arithmetic number, because the mean of its divisors is an integer number (3181227).

Almost surely, 2^30679142 is an apocalyptic number.

30679142 is a deficient number, since it is larger than the sum of its proper divisors (20220490).

30679142 is a wasteful number, since it uses less digits than its factorization.

30679142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31943.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 30679142 is about 5538.8755176480. The cubic root of 30679142 is about 313.0505010261.

The spelling of 30679142 in words is "thirty million, six hundred seventy-nine thousand, one hundred forty-two".