39040242 has 8 divisors (see below), whose sum is σ = 78080496. Its totient is φ = 13013412.

The previous prime is 39040229. The next prime is 39040247. The reversal of 39040242 is 24204093.

It is a happy number.

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

39040242 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (39040247) 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, 3253348 + ... + 3253359.

It is an arithmetic number, because the mean of its divisors is an integer number (9760062).

Almost surely, 2^39040242 is an apocalyptic number.

39040242 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.

39040242 is a wasteful number, since it uses less digits than its factorization.

39040242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6506712.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 39040242 is about 6248.2191062734. The cubic root of 39040242 is about 339.2377444889.

The spelling of 39040242 in words is "thirty-nine million, forty thousand, two hundred forty-two".