42930506 has 4 divisors (see below), whose sum is σ = 64395762. Its totient is φ = 21465252.

The previous prime is 42930479. The next prime is 42930509. The reversal of 42930506 is 60503924.

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

It can be written as a sum of positive squares in only one way, i.e., 34281025 + 8649481 = 5855^2 + 2941^2 .

It is not an unprimeable number, because it can be changed into a prime (42930509) by changing a digit.

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, 10732625 + ... + 10732628.

Almost surely, 2^42930506 is an apocalyptic number.

42930506 is a deficient number, since it is larger than the sum of its proper divisors (21465256).

42930506 is a wasteful number, since it uses less digits than its factorization.

42930506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21465255.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 42930506 is about 6552.1375138194. The cubic root of 42930506 is about 350.1509716041.

The spelling of 42930506 in words is "forty-two million, nine hundred thirty thousand, five hundred six".