442321234 has 12 divisors (see below), whose sum is σ = 693584766. Its totient is φ = 211544432.

The previous prime is 442321223. The next prime is 442321241. The reversal of 442321234 is 432123244.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 267420609 + 174900625 = 16353^2 + 13225^2 .

It is a junction number, because it is equal to n+sod(n) for n = 442321199 and 442321208.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 207979 + ... + 210094.

Almost surely, 2^442321234 is an apocalyptic number.

442321234 is a deficient number, since it is larger than the sum of its proper divisors (251263532).

442321234 is a wasteful number, since it uses less digits than its factorization.

442321234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418121 (or 418098 counting only the distinct ones).

The product of its digits is 4608, while the sum is 25.

The square root of 442321234 is about 21031.4344256401. The cubic root of 442321234 is about 761.9256534496.

Adding to 442321234 its reverse (432123244), we get a palindrome (874444478).

The spelling of 442321234 in words is "four hundred forty-two million, three hundred twenty-one thousand, two hundred thirty-four".