42039801 has 24 divisors (see below), whose sum is σ = 63292320. Its totient is φ = 26865600.

The previous prime is 42039779. The next prime is 42039841. The reversal of 42039801 is 10893024.

It is not a de Polignac number, because 42039801 - 2⁵ = 42039769 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42039841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20806 + ... + 22736.

It is an arithmetic number, because the mean of its divisors is an integer number (2637180).

Almost surely, 2^42039801 is an apocalyptic number.

42039801 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

42039801 is a deficient number, since it is larger than the sum of its proper divisors (21252519).

42039801 is a wasteful number, since it uses less digits than its factorization.

42039801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2037 (or 2034 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 42039801 is about 6483.8106850833. The cubic root of 42039801 is about 347.7124308835.

The spelling of 42039801 in words is "forty-two million, thirty-nine thousand, eight hundred one".