42523506 has 24 divisors (see below), whose sum is σ = 95107584. Its totient is φ = 13717080.

The previous prime is 42523489. The next prime is 42523531. The reversal of 42523506 is 60532524.

42523506 is a `hidden beast` number, since 425 + 235 + 0 + 6 = 666.

42523506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 42523506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37546 + ... + 38661.

It is an arithmetic number, because the mean of its divisors is an integer number (3962816).

Almost surely, 2^42523506 is an apocalyptic number.

42523506 is an abundant number, since it is smaller than the sum of its proper divisors (52584078).

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

42523506 is a wasteful number, since it uses less digits than its factorization.

42523506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76246 (or 76243 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 42523506 is about 6521.0049838963. The cubic root of 42523506 is about 349.0409280879.

The spelling of 42523506 in words is "forty-two million, five hundred twenty-three thousand, five hundred six".