30642042 has 16 divisors (see below), whose sum is σ = 62124480. Its totient is φ = 10073952.

The previous prime is 30642037. The next prime is 30642083. The reversal of 30642042 is 24024603.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34542 + ... + 35417.

It is an arithmetic number, because the mean of its divisors is an integer number (3882780).

Almost surely, 2^30642042 is an apocalyptic number.

30642042 is an abundant number, since it is smaller than the sum of its proper divisors (31482438).

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

30642042 is a wasteful number, since it uses less digits than its factorization.

30642042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70037.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 30642042 is about 5535.5254493137. The cubic root of 30642042 is about 312.9242604425.

Adding to 30642042 its reverse (24024603), we get a palindrome (54666645).

The spelling of 30642042 in words is "thirty million, six hundred forty-two thousand, forty-two".