42508894 has 4 divisors (see below), whose sum is σ = 63763344. Its totient is φ = 21254446.

The previous prime is 42508883. The next prime is 42508901. The reversal of 42508894 is 49880524.

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

It is a congruent number.

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, 10627222 + ... + 10627225.

It is an arithmetic number, because the mean of its divisors is an integer number (15940836).

Almost surely, 2^42508894 is an apocalyptic number.

42508894 is a deficient number, since it is larger than the sum of its proper divisors (21254450).

42508894 is a wasteful number, since it uses less digits than its factorization.

42508894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21254449.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 42508894 is about 6519.8845081796. The cubic root of 42508894 is about 349.0009441605. Note that the first 3 decimals are identical.

The spelling of 42508894 in words is "forty-two million, five hundred eight thousand, eight hundred ninety-four".