442429 has 4 divisors (see below), whose sum is σ = 476476. Its totient is φ = 408384.

The previous prime is 442399. The next prime is 442439. The reversal of 442429 is 924244.

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 182329 + 260100 = 427^2 + 510^2 .

It is a cyclic number.

It is not a de Polignac number, because 442429 - 2⁵ = 442397 is a prime.

442429 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442439) 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, 17004 + ... + 17029.

It is an arithmetic number, because the mean of its divisors is an integer number (119119).

2⁴⁴²⁴²⁹ is an apocalyptic number.

It is an amenable number.

442429 is a deficient number, since it is larger than the sum of its proper divisors (34047).

442429 is a wasteful number, since it uses less digits than its factorization.

442429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34046.

The product of its digits is 2304, while the sum is 25.

The square root of 442429 is about 665.1533657736. The cubic root of 442429 is about 76.1987526289.

The spelling of 442429 in words is "four hundred forty-two thousand, four hundred twenty-nine".