30630042 has 32 divisors (see below), whose sum is σ = 68290560. Its totient is φ = 10176480.

The previous prime is 30630029. The next prime is 30630091. The reversal of 30630042 is 24003603.

30630042 is a `hidden beast` number, since 30 + 630 + 0 + 4 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 30629997 and 30630024.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19942 + ... + 21422.

It is an arithmetic number, because the mean of its divisors is an integer number (2134080).

Almost surely, 2^30630042 is an apocalyptic number.

30630042 is an abundant number, since it is smaller than the sum of its proper divisors (37660518).

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

30630042 is a wasteful number, since it uses less digits than its factorization.

30630042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875 (or 1869 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 30630042 is about 5534.4414352308. The cubic root of 30630042 is about 312.8834061002.

Adding to 30630042 its reverse (24003603), we get a palindrome (54633645).

The spelling of 30630042 in words is "thirty million, six hundred thirty thousand, forty-two".