42236621 has 8 divisors (see below), whose sum is σ = 49393344. Its totient is φ = 35360640.

The previous prime is 42236617. The next prime is 42236657. The reversal of 42236621 is 12663224.

42236621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 42236621 - 2² = 42236617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42236681) 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 7 ways as a sum of consecutive naturals, for example, 69860 + ... + 70461.

It is an arithmetic number, because the mean of its divisors is an integer number (6174168).

Almost surely, 2^42236621 is an apocalyptic number.

It is an amenable number.

42236621 is a deficient number, since it is larger than the sum of its proper divisors (7156723).

42236621 is a wasteful number, since it uses less digits than its factorization.

42236621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140371.

The product of its digits is 3456, while the sum is 26.

The square root of 42236621 is about 6498.9707646673. The cubic root of 42236621 is about 348.2542209221.

Adding to 42236621 its reverse (12663224), we get a palindrome (54899845).

The spelling of 42236621 in words is "forty-two million, two hundred thirty-six thousand, six hundred twenty-one".