30542042 has 4 divisors (see below), whose sum is σ = 45813066. Its totient is φ = 15271020.

The previous prime is 30542033. The next prime is 30542051. The reversal of 30542042 is 24024503.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (30542033) and next prime (30542051).

It can be written as a sum of positive squares in only one way, i.e., 29170801 + 1371241 = 5401^2 + 1171^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7635509 + ... + 7635512.

Almost surely, 2^30542042 is an apocalyptic number.

30542042 is a deficient number, since it is larger than the sum of its proper divisors (15271024).

30542042 is a wasteful number, since it uses less digits than its factorization.

30542042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15271023.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 30542042 is about 5526.4855016547. The cubic root of 30542042 is about 312.5834810569.

Adding to 30542042 its reverse (24024503), we get a palindrome (54566545).

The spelling of 30542042 in words is "thirty million, five hundred forty-two thousand, forty-two".