42009950 has 24 divisors (see below), whose sum is σ = 82252920. Its totient is φ = 15919200.

The previous prime is 42009923. The next prime is 42009959. The reversal of 42009950 is 5990024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42009959) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21161 + ... + 23060.

It is an arithmetic number, because the mean of its divisors is an integer number (3427205).

Almost surely, 2^42009950 is an apocalyptic number.

42009950 is a deficient number, since it is larger than the sum of its proper divisors (40242970).

42009950 is a wasteful number, since it uses less digits than its factorization.

42009950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44252 (or 44247 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 42009950 is about 6481.5083121138. The cubic root of 42009950 is about 347.6301118968.

Adding to 42009950 its reverse (5990024), we get a palindrome (47999974).

The spelling of 42009950 in words is "forty-two million, nine thousand, nine hundred fifty".