942434221 has 4 divisors (see below), whose sum is σ = 942831100. Its totient is φ = 942037344.

The previous prime is 942434189. The next prime is 942434231. The reversal of 942434221 is 122434249.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 83064996 + 859369225 = 9114^2 + 29315^2 .

It is a cyclic number.

It is not a de Polignac number, because 942434221 - 2⁵ = 942434189 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 (942434231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194856 + ... + 199633.

It is an arithmetic number, because the mean of its divisors is an integer number (235707775).

Almost surely, 2^942434221 is an apocalyptic number.

It is an amenable number.

942434221 is a deficient number, since it is larger than the sum of its proper divisors (396879).

942434221 is a wasteful number, since it uses less digits than its factorization.

942434221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396878.

The product of its digits is 13824, while the sum is 31.

The square root of 942434221 is about 30699.0915337897. The cubic root of 942434221 is about 980.4309575490.

The spelling of 942434221 in words is "nine hundred forty-two million, four hundred thirty-four thousand, two hundred twenty-one".