42506229 has 8 divisors (see below), whose sum is σ = 58206880. Its totient is φ = 27571536.

The previous prime is 42506197. The next prime is 42506237. The reversal of 42506229 is 92260524.

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

It is not a de Polignac number, because 42506229 - 2⁵ = 42506197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42506196 and 42506205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42506279) 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, 191359 + ... + 191580.

It is an arithmetic number, because the mean of its divisors is an integer number (7275860).

Almost surely, 2^42506229 is an apocalyptic number.

It is an amenable number.

42506229 is a deficient number, since it is larger than the sum of its proper divisors (15700651).

42506229 is a wasteful number, since it uses less digits than its factorization.

42506229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382979.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 42506229 is about 6519.6801301904. The cubic root of 42506229 is about 348.9936507303.

The spelling of 42506229 in words is "forty-two million, five hundred six thousand, two hundred twenty-nine".