42408646 has 16 divisors (see below), whose sum is σ = 76527360. Its totient is φ = 17218440.

The previous prime is 42408631. The next prime is 42408647. The reversal of 42408646 is 64680424.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42408647) 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, 79450 + ... + 79981.

It is an arithmetic number, because the mean of its divisors is an integer number (4782960).

Almost surely, 2^42408646 is an apocalyptic number.

42408646 is a deficient number, since it is larger than the sum of its proper divisors (34118714).

42408646 is a wasteful number, since it uses less digits than its factorization.

42408646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159459.

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 42408646 is about 6512.1921040461. The cubic root of 42408646 is about 348.7263805555.

The spelling of 42408646 in words is "forty-two million, four hundred eight thousand, six hundred forty-six".