42347220 has 24 divisors (see below), whose sum is σ = 118572384. Its totient is φ = 11292576.

The previous prime is 42347213. The next prime is 42347233. The reversal of 42347220 is 2274324.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352834 + ... + 352953.

It is an arithmetic number, because the mean of its divisors is an integer number (4940516).

Almost surely, 2^42347220 is an apocalyptic number.

It is an amenable number.

42347220 is an abundant number, since it is smaller than the sum of its proper divisors (76225164).

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

42347220 is a wasteful number, since it uses less digits than its factorization.

42347220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705799 (or 705797 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 42347220 is about 6507.4741643744. The cubic root of 42347220 is about 348.5579304930.

The spelling of 42347220 in words is "forty-two million, three hundred forty-seven thousand, two hundred twenty".