442041231 has 4 divisors (see below), whose sum is σ = 589388312. Its totient is φ = 294694152.

The previous prime is 442041221. The next prime is 442041239. The reversal of 442041231 is 132140244.

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

It is not a de Polignac number, because 442041231 - 2⁵ = 442041199 is a prime.

It is a super-2 number, since 2×442041231² = 390800899807990722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442041198 and 442041207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442041239) 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, 73673536 + ... + 73673541.

It is an arithmetic number, because the mean of its divisors is an integer number (147347078).

Almost surely, 2^442041231 is an apocalyptic number.

442041231 is a deficient number, since it is larger than the sum of its proper divisors (147347081).

442041231 is a wasteful number, since it uses less digits than its factorization.

442041231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147347080.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 442041231 is about 21024.7765980997. The cubic root of 442041231 is about 761.7648453570.

Adding to 442041231 its reverse (132140244), we get a palindrome (574181475).

The spelling of 442041231 in words is "four hundred forty-two million, forty-one thousand, two hundred thirty-one".