42638594 has 16 divisors (see below), whose sum is σ = 64991808. Its totient is φ = 20976912.

The previous prime is 42638593. The next prime is 42638597. The reversal of 42638594 is 49583624.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42638593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65579 + ... + 66225.

It is an arithmetic number, because the mean of its divisors is an integer number (4061988).

Almost surely, 2^42638594 is an apocalyptic number.

42638594 is a deficient number, since it is larger than the sum of its proper divisors (22353214).

42638594 is a wasteful number, since it uses less digits than its factorization.

42638594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129.

The product of its digits is 207360, while the sum is 41.

The square root of 42638594 is about 6529.8234279343. The cubic root of 42638594 is about 349.3555324144.

The spelling of 42638594 in words is "forty-two million, six hundred thirty-eight thousand, five hundred ninety-four".