42646594 has 4 divisors (see below), whose sum is σ = 63969894. Its totient is φ = 21323296.

The previous prime is 42646589. The next prime is 42646613. The reversal of 42646594 is 49564624.

It is a happy number.

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., 25877569 + 16769025 = 5087^2 + 4095^2 .

It is a plaindrome in base 12.

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, 10661647 + ... + 10661650.

Almost surely, 2^42646594 is an apocalyptic number.

42646594 is a deficient number, since it is larger than the sum of its proper divisors (21323300).

42646594 is a wasteful number, since it uses less digits than its factorization.

42646594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21323299.

The product of its digits is 207360, while the sum is 40.

The square root of 42646594 is about 6530.4359731951. The cubic root of 42646594 is about 349.3773801445.

The spelling of 42646594 in words is "forty-two million, six hundred forty-six thousand, five hundred ninety-four".