42229845 has 48 divisors (see below), whose sum is σ = 84764160. Its totient is φ = 19049472.

The previous prime is 42229841. The next prime is 42229849. The reversal of 42229845 is 54892224.

It is an interprime number because it is at equal distance from previous prime (42229841) and next prime (42229849).

It is not a de Polignac number, because 42229845 - 2² = 42229841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42229841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24037 + ... + 25733.

It is an arithmetic number, because the mean of its divisors is an integer number (1765920).

Almost surely, 2^42229845 is an apocalyptic number.

42229845 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42229845 is an abundant number, since it is smaller than the sum of its proper divisors (42534315).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42229845 is a wasteful number, since it uses less digits than its factorization.

42229845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1794 (or 1791 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 42229845 is about 6498.4494304411. The cubic root of 42229845 is about 348.2355965092.

The spelling of 42229845 in words is "forty-two million, two hundred twenty-nine thousand, eight hundred forty-five".