42668590 has 8 divisors (see below), whose sum is σ = 76803480. Its totient is φ = 17067432.

The previous prime is 42668543. The next prime is 42668627. The reversal of 42668590 is 9586624.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×42668590³ (a number of 24 digits) contains 333 as substring.

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 in 3 ways as a sum of consecutive naturals, for example, 2133420 + ... + 2133439.

It is an arithmetic number, because the mean of its divisors is an integer number (9600435).

Almost surely, 2^42668590 is an apocalyptic number.

42668590 is a deficient number, since it is larger than the sum of its proper divisors (34134890).

42668590 is a wasteful number, since it uses less digits than its factorization.

42668590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4266866.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 42668590 is about 6532.1198703024. The cubic root of 42668590 is about 349.4374363982.

The spelling of 42668590 in words is "forty-two million, six hundred sixty-eight thousand, five hundred ninety".