42406242 has 8 divisors (see below), whose sum is σ = 84812496. Its totient is φ = 14135412.

The previous prime is 42406229. The next prime is 42406261. The reversal of 42406242 is 24260424.

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

42406242 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3533848 + ... + 3533859.

It is an arithmetic number, because the mean of its divisors is an integer number (10601562).

Almost surely, 2^42406242 is an apocalyptic number.

42406242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42406242 is a wasteful number, since it uses less digits than its factorization.

42406242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7067712.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 42406242 is about 6512.0075245657. The cubic root of 42406242 is about 348.7197910654.

Adding to 42406242 its reverse (24260424), we get a palindrome (66666666).

The spelling of 42406242 in words is "forty-two million, four hundred six thousand, two hundred forty-two".