42941221 has 8 divisors (see below), whose sum is σ = 44311680. Its totient is φ = 41589888.

The previous prime is 42941191. The next prime is 42941237. The reversal of 42941221 is 12214924.

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 42941221 - 2⁵ = 42941189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42941251) 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, 151 + ... + 9268.

It is an arithmetic number, because the mean of its divisors is an integer number (5538960).

Almost surely, 2^42941221 is an apocalyptic number.

It is an amenable number.

42941221 is a deficient number, since it is larger than the sum of its proper divisors (1370459).

42941221 is an equidigital number, since it uses as much as digits as its factorization.

42941221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9563.

The product of its digits is 1152, while the sum is 25.

The square root of 42941221 is about 6552.9551348991. The cubic root of 42941221 is about 350.1801005065.

It can be divided in two parts, 4 and 2941221, that added together give a square (2941225 = 1715²).

The spelling of 42941221 in words is "forty-two million, nine hundred forty-one thousand, two hundred twenty-one".