42039851 has 8 divisors (see below), whose sum is σ = 48274944. Its totient is φ = 35862120.

The previous prime is 42039841. The next prime is 42039857. The reversal of 42039851 is 15893024.

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

It is not a de Polignac number, because 42039851 - 2¹⁴ = 42023467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42039857) 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, 12755 + ... + 15708.

It is an arithmetic number, because the mean of its divisors is an integer number (6034368).

Almost surely, 2^42039851 is an apocalyptic number.

42039851 is a deficient number, since it is larger than the sum of its proper divisors (6235093).

42039851 is a wasteful number, since it uses less digits than its factorization.

42039851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28681.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 42039851 is about 6483.8145408394. The cubic root of 42039851 is about 347.7125687340.

The spelling of 42039851 in words is "forty-two million, thirty-nine thousand, eight hundred fifty-one".