42473221 has 8 divisors (see below), whose sum is σ = 48593664. Its totient is φ = 36366000.

The previous prime is 42473219. The next prime is 42473231. The reversal of 42473221 is 12237424.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 42473221 - 2¹ = 42473219 is a prime.

It is a super-2 number, since 2×42473221² = 3607949004229682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42473201) 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, 4971 + ... + 10471.

It is an arithmetic number, because the mean of its divisors is an integer number (6074208).

Almost surely, 2^42473221 is an apocalyptic number.

It is an amenable number.

42473221 is a deficient number, since it is larger than the sum of its proper divisors (6120443).

42473221 is a wasteful number, since it uses less digits than its factorization.

42473221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6611.

The product of its digits is 2688, while the sum is 25.

The square root of 42473221 is about 6517.1482260265. The cubic root of 42473221 is about 348.9032909108.

The spelling of 42473221 in words is "forty-two million, four hundred seventy-three thousand, two hundred twenty-one".