42490906 has 8 divisors (see below), whose sum is σ = 63794304. Its totient is φ = 21226140.

The previous prime is 42490849. The next prime is 42490907. The reversal of 42490906 is 60909424.

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

It is not an unprimeable number, because it can be changed into a prime (42490907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6730 + ... + 11413.

It is an arithmetic number, because the mean of its divisors is an integer number (7974288).

Almost surely, 2^42490906 is an apocalyptic number.

42490906 is a deficient number, since it is larger than the sum of its proper divisors (21303398).

42490906 is a wasteful number, since it uses less digits than its factorization.

42490906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19316.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 42490906 is about 6518.5048899268. The cubic root of 42490906 is about 348.9517096426.

The spelling of 42490906 in words is "forty-two million, four hundred ninety thousand, nine hundred six".