42399850 has 12 divisors (see below), whose sum is σ = 78863814. Its totient is φ = 16959920.

The previous prime is 42399829. The next prime is 42399857. The reversal of 42399850 is 5899324.

It is a happy number.

42399850 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 35414401 + 6985449 = 5951^2 + 2643^2 .

It is not an unprimeable number, because it can be changed into a prime (42399857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 423949 + ... + 424048.

Almost surely, 2^42399850 is an apocalyptic number.

42399850 is a deficient number, since it is larger than the sum of its proper divisors (36463964).

42399850 is a wasteful number, since it uses less digits than its factorization.

42399850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848009 (or 848004 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 42399850 is about 6511.5167203963. The cubic root of 42399850 is about 348.7022690465.

The spelling of 42399850 in words is "forty-two million, three hundred ninety-nine thousand, eight hundred fifty".